diff --git a/elements/automatisme/fonction/qet_directory b/elements/automatisme/fonction/qet_directory
index fda748328..3030b2a1a 100644
--- a/elements/automatisme/fonction/qet_directory
+++ b/elements/automatisme/fonction/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Logic gates</name>
         <name lang="fr" >Fonctions logiques</name>
         <name lang="es" >Puertas lógicas</name>
+        <name lang="cs" >Logické funkce</name>
     </names>
 </qet-directory>
diff --git a/elements/automatisme/lader/input/qet_directory b/elements/automatisme/lader/input/qet_directory
index ad0210477..0b1492e0b 100644
--- a/elements/automatisme/lader/input/qet_directory
+++ b/elements/automatisme/lader/input/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Inputs</name>
         <name lang="fr" >Entrées</name>
         <name lang="es" >Entradas</name>
+        <name lang="cs" >Vstupy</name>
     </names>
 </qet-directory>
diff --git a/elements/automatisme/lader/output/qet_directory b/elements/automatisme/lader/output/qet_directory
index 53fae2ab3..127e04d73 100644
--- a/elements/automatisme/lader/output/qet_directory
+++ b/elements/automatisme/lader/output/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Outputs</name>
         <name lang="fr" >Sorties</name>
         <name lang="es" >Salidas</name>
+        <name lang="cs" >Výstupy</name>
     </names>
 </qet-directory>
diff --git a/elements/automatisme/lader/qet_directory b/elements/automatisme/lader/qet_directory
index aa3bc7f00..e98cbcc90 100644
--- a/elements/automatisme/lader/qet_directory
+++ b/elements/automatisme/lader/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Ladder</name>
         <name lang="fr" >Ladder</name>
         <name lang="es" >Ladder</name>
+        <name lang="cs" >Žebřík</name>
     </names>
 </qet-directory>
diff --git a/elements/automatisme/qet_directory b/elements/automatisme/qet_directory
index 8e1842b47..7ea598249 100644
--- a/elements/automatisme/qet_directory
+++ b/elements/automatisme/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Automatism</name>
         <name lang="fr" >Automatisme</name>
         <name lang="es" >Automatismo</name>
+        <name lang="cs" >Automatika</name>
     </names>
 </qet-directory>
diff --git a/elements/capteurs/appareils_de_mesure/qet_directory b/elements/capteurs/appareils_de_mesure/qet_directory
index 38418334f..288d4f9a7 100644
--- a/elements/capteurs/appareils_de_mesure/qet_directory
+++ b/elements/capteurs/appareils_de_mesure/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Measuring instruments</name>
         <name lang="fr" >Appareils de mesure</name>
         <name lang="es" >Instrumento de medición</name>
+        <name lang="cs" >Měřící přístroje</name>
     </names>
 </qet-directory>
diff --git a/elements/capteurs/qet_directory b/elements/capteurs/qet_directory
index 4e70718e8..5c82e1ac6 100644
--- a/elements/capteurs/qet_directory
+++ b/elements/capteurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Transducers</name>
         <name lang="fr" >Capteurs</name>
         <name lang="es" >Sensores</name>
+        <name lang="cs" >Snímače</name>
     </names>
 </qet-directory>
diff --git a/elements/capteurs/sondes/qet_directory b/elements/capteurs/sondes/qet_directory
index fcb9ae597..661a3011d 100644
--- a/elements/capteurs/sondes/qet_directory
+++ b/elements/capteurs/sondes/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Sensors</name>
         <name lang="fr" >Sondes</name>
         <name lang="es" >Sondeos</name>
+        <name lang="cs" >Snímače</name>
     </names>
 </qet-directory>
diff --git a/elements/capteurs/sondes/tores_de_courant/qet_directory b/elements/capteurs/sondes/tores_de_courant/qet_directory
index 4d9609043..632365bea 100644
--- a/elements/capteurs/sondes/tores_de_courant/qet_directory
+++ b/elements/capteurs/sondes/tores_de_courant/qet_directory
@@ -2,6 +2,7 @@
     <names>
         <name lang="en" >Current toroidal core</name>
         <name lang="fr" >Tores de courant</name>
-         <name lang="es" >Núcleos toroidales de corriente</name>
+        <name lang="es" >Núcleos toroidales de corriente</name>
+        <name lang="cs" >Prstencové jádro střídavého proudu</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/bornes/qet_directory b/elements/contacts/bornes/qet_directory
index 245c7161e..9554f35ac 100644
--- a/elements/contacts/bornes/qet_directory
+++ b/elements/contacts/bornes/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Terminals</name>
         <name lang="fr" >Bornes</name>
         <name lang="es" >Terminales</name>
+        <name lang="cs" >Svorky</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/etanches/qet_directory b/elements/contacts/etanches/qet_directory
index f66238c31..52c116d3e 100644
--- a/elements/contacts/etanches/qet_directory
+++ b/elements/contacts/etanches/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Tight</name>
         <name lang="fr" >Étanches</name>
         <name lang="es" >Resistentes al agua</name>
+        <name lang="cs" >Vodotěsné</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/fin_de_course/qet_directory b/elements/contacts/fin_de_course/qet_directory
index d6b149836..69e631e92 100644
--- a/elements/contacts/fin_de_course/qet_directory
+++ b/elements/contacts/fin_de_course/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Limits</name>
         <name lang="fr" >Fins de courses</name>
         <name lang="es" >Finales de carrera</name>
+        <name lang="cs" >Konce vodivých spojení</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/interupteur/qet_directory b/elements/contacts/interupteur/qet_directory
index 4e98d4d75..bc618db68 100644
--- a/elements/contacts/interupteur/qet_directory
+++ b/elements/contacts/interupteur/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Switchs</name>
         <name lang="fr" >Interrupteurs</name>
         <name lang="es" >Interruptores</name>
+        <name lang="cs" >Spínače</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/poussoirs/qet_directory b/elements/contacts/poussoirs/qet_directory
index b7a26da00..a4e0ca1cc 100644
--- a/elements/contacts/poussoirs/qet_directory
+++ b/elements/contacts/poussoirs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Push-buttons</name>
         <name lang="fr" >Poussoirs</name>
         <name lang="es" >Pulsadores</name>
+        <name lang="cs" >Tlačítka</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/puissance/normalement_fermes/qet_directory b/elements/contacts/puissance/normalement_fermes/qet_directory
index 90918b124..2e0db6864 100644
--- a/elements/contacts/puissance/normalement_fermes/qet_directory
+++ b/elements/contacts/puissance/normalement_fermes/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Normally closed</name>
         <name lang="fr" >Normalement fermés</name>
         <name lang="es" >Normalmente cerrados</name>
+        <name lang="cs" >Obvykle zavřené</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/puissance/normalement_ouverts/qet_directory b/elements/contacts/puissance/normalement_ouverts/qet_directory
index e2759569a..8d5c54bcd 100644
--- a/elements/contacts/puissance/normalement_ouverts/qet_directory
+++ b/elements/contacts/puissance/normalement_ouverts/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Normally open</name>
         <name lang="fr" >Normalement ouverts</name>
         <name lang="es" >Normalemente abiertos</name>
+        <name lang="cs" >Obvykle otevřené</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/puissance/qet_directory b/elements/contacts/puissance/qet_directory
index 914afebdf..4be2b6911 100644
--- a/elements/contacts/puissance/qet_directory
+++ b/elements/contacts/puissance/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Power</name>
         <name lang="fr" >Puissance</name>
         <name lang="es" >Potencia</name>
+        <name lang="cs" >Síla</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/qet_directory b/elements/contacts/qet_directory
index c59ffd17c..ee2d71a7e 100644
--- a/elements/contacts/qet_directory
+++ b/elements/contacts/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Contacts</name>
         <name lang="fr" >Contacts</name>
         <name lang="es" >Terminales</name>
+        <name lang="cs" >Kontakty</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/relais_thermique/qet_directory b/elements/contacts/relais_thermique/qet_directory
index 59ac1e5c0..cd8508f0b 100644
--- a/elements/contacts/relais_thermique/qet_directory
+++ b/elements/contacts/relais_thermique/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Thermal relays</name>
         <name lang="fr" >Relais thermiques</name>
         <name lang="es" >Relés térmicos</name>
+        <name lang="cs" >Tepelné relé</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/simples/qet_directory b/elements/contacts/simples/qet_directory
index 21dd4fae5..bbf406cd3 100644
--- a/elements/contacts/simples/qet_directory
+++ b/elements/contacts/simples/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Simple</name>
         <name lang="fr" >Simples</name>
         <name lang="es" >Simples</name>
+        <name lang="cs" >Jednoduché</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/temporises/qet_directory b/elements/contacts/temporises/qet_directory
index 5a148aee4..08e2ff87e 100644
--- a/elements/contacts/temporises/qet_directory
+++ b/elements/contacts/temporises/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Switch Delay</name>
         <name lang="fr" >Temporisés</name>
         <name lang="es" >Comutadores de retardo</name>
+        <name lang="cs" >Opožděné sepnutí</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/temporises/repos/qet_directory b/elements/contacts/temporises/repos/qet_directory
index 070d8798a..455134aee 100644
--- a/elements/contacts/temporises/repos/qet_directory
+++ b/elements/contacts/temporises/repos/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Switch-off delay</name>
         <name lang="fr" >Repos</name>
         <name lang="es" >Comutadores de tiempo retardado de apago</name>
+        <name lang="cs" >Opožděné vypnutí</name>
     </names>
 </qet-directory>
diff --git a/elements/contacts/temporises/travail/qet_directory b/elements/contacts/temporises/travail/qet_directory
index 5366b4949..dfefa256c 100644
--- a/elements/contacts/temporises/travail/qet_directory
+++ b/elements/contacts/temporises/travail/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Switch-on delay</name>
         <name lang="fr" >Travail</name>
         <name lang="es" >Comutadores de tiempo retardado de encendido</name>
+        <name lang="cs" >Opožděné zapnutí</name>
     </names>
 </qet-directory>
diff --git a/elements/convertisseurs/blocs/qet_directory b/elements/convertisseurs/blocs/qet_directory
index e36317180..6d68c166e 100644
--- a/elements/convertisseurs/blocs/qet_directory
+++ b/elements/convertisseurs/blocs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Boxes</name>
         <name lang="fr" >Blocs</name>
         <name lang="es" >Bloques</name>
+        <name lang="cs" >Bloky</name>
     </names>
 </qet-directory>
diff --git a/elements/convertisseurs/qet_directory b/elements/convertisseurs/qet_directory
index e362f5f12..0aae401eb 100644
--- a/elements/convertisseurs/qet_directory
+++ b/elements/convertisseurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Converters</name>
         <name lang="fr" >Convertisseurs</name>
         <name lang="es" >Convertidores</name>
+        <name lang="cs" >Měniče</name>
     </names>
 </qet-directory>
diff --git a/elements/haute_tension/qet_directory b/elements/haute_tension/qet_directory
index b4535208e..26d4d5840 100644
--- a/elements/haute_tension/qet_directory
+++ b/elements/haute_tension/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >High voltage</name>
         <name lang="fr" >Haute tension</name>
         <name lang="es" >Alta tensión</name>
+        <name lang="cs" >Vysoké napětí</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/disjoncteurs/qet_directory b/elements/protections/disjoncteurs/qet_directory
index 3c99c4de8..d0211f3f4 100644
--- a/elements/protections/disjoncteurs/qet_directory
+++ b/elements/protections/disjoncteurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Circuit-breakers</name>
         <name lang="fr" >Disjoncteurs</name>
         <name lang="es" >Disyuntores</name>
+        <name lang="cs" >Jističe</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/disjoncteurs_differentiels/qet_directory b/elements/protections/disjoncteurs_differentiels/qet_directory
index 59cb18a95..beec56cbc 100644
--- a/elements/protections/disjoncteurs_differentiels/qet_directory
+++ b/elements/protections/disjoncteurs_differentiels/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Differential circuit-breakers</name>
         <name lang="fr" >Disjoncteurs différentiels</name>
         <name lang="es" >Dispositivos diferenciales residuales</name>
+        <name lang="cs" >Rozdílové jističe</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/interrupteurs_differentiels/qet_directory b/elements/protections/interrupteurs_differentiels/qet_directory
index e12480642..de6e8828e 100644
--- a/elements/protections/interrupteurs_differentiels/qet_directory
+++ b/elements/protections/interrupteurs_differentiels/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Differential switches</name>
         <name lang="fr" >Interrupteurs différentiels</name>
         <name lang="es" >Interruptores diferenciales</name>
+        <name lang="cs" >Rozdílové spínače</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/interrupteurs_sectionneurs/qet_directory b/elements/protections/interrupteurs_sectionneurs/qet_directory
index 4df2b6dbe..6b4f1696e 100644
--- a/elements/protections/interrupteurs_sectionneurs/qet_directory
+++ b/elements/protections/interrupteurs_sectionneurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Disconnecting switches</name>
         <name lang="fr" >Interrupteurs sectionneurs</name>
         <name lang="es" >Interruptores seccionadores</name>
+        <name lang="cs" >Odpojovače</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/porte_fusibles/qet_directory b/elements/protections/porte_fusibles/qet_directory
index fd982b2c0..91135841f 100644
--- a/elements/protections/porte_fusibles/qet_directory
+++ b/elements/protections/porte_fusibles/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Fuses Holder</name>
         <name lang="fr" >Porte-fusibles</name>
         <name lang="es" >Portafusibles</name>
+        <name lang="cs" >Držák pojistek</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/qet_directory b/elements/protections/qet_directory
index 751fff987..42ae5f87f 100644
--- a/elements/protections/qet_directory
+++ b/elements/protections/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Protections</name>
         <name lang="fr" >Protections</name>
         <name lang="es" >Protecciones</name>
+        <name lang="cs" >Ochrany</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/relais_thermiques/qet_directory b/elements/protections/relais_thermiques/qet_directory
index 4669d6b64..6dae7dc88 100644
--- a/elements/protections/relais_thermiques/qet_directory
+++ b/elements/protections/relais_thermiques/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Thermal relays</name>
         <name lang="fr" >Relais thermiques</name>
         <name lang="es" >Relés térmicos</name>
+        <name lang="cs" >Tepelné relé</name>
     </names>
 </qet-directory>
diff --git a/elements/protections/sectionneurs/qet_directory b/elements/protections/sectionneurs/qet_directory
index e62bd06d8..980c85b1e 100644
--- a/elements/protections/sectionneurs/qet_directory
+++ b/elements/protections/sectionneurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Disconnecting switches</name>
         <name lang="fr" >Sectionneurs</name>
         <name lang="es" >Seccionadores</name>
+        <name lang="cs" >Odpojovače</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/bobines/qet_directory b/elements/recepteurs/bobines/qet_directory
index f128a893c..28e8a66b3 100644
--- a/elements/recepteurs/bobines/qet_directory
+++ b/elements/recepteurs/bobines/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Coils</name>
         <name lang="fr" >Bobines</name>
         <name lang="es" >Bobinas</name>
+        <name lang="cs" >Cívky</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/domestiques/qet_directory b/elements/recepteurs/domestiques/qet_directory
index 425e6909e..ee65b1698 100644
--- a/elements/recepteurs/domestiques/qet_directory
+++ b/elements/recepteurs/domestiques/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Domestic</name>
         <name lang="fr" >Domestiques</name>
         <name lang="es" >Electrodoméstico</name>
+        <name lang="cs" >Domácí</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/lampes/qet_directory b/elements/recepteurs/lampes/qet_directory
index f87a0aaa7..49c92f5b1 100644
--- a/elements/recepteurs/lampes/qet_directory
+++ b/elements/recepteurs/lampes/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Lights</name>
         <name lang="fr" >Lampes</name>
         <name lang="es" >Lámparas</name>
+        <name lang="cs" >Světla</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/machines/gene_tri.elmt b/elements/recepteurs/machines/gene_tri.elmt
index ea2e49ff0..221bf9379 100644
--- a/elements/recepteurs/machines/gene_tri.elmt
+++ b/elements/recepteurs/machines/gene_tri.elmt
@@ -4,6 +4,7 @@
         <name lang="en" >Three-phase generator</name>
         <name lang="fr" >Génératrice triphasée</name>
         <name lang="es" >Generador trifasico</name>
+        <name lang="cs" >Třífázový generátor</name>
     </names>
     <description>
         <circle x="-15" y="-25" antialias="true" style="line-style:normal;line-weight:normal;filling:none;color:black" diameter="30" />
diff --git a/elements/recepteurs/machines/qet_directory b/elements/recepteurs/machines/qet_directory
index 2b3d69ffa..dc77d2477 100644
--- a/elements/recepteurs/machines/qet_directory
+++ b/elements/recepteurs/machines/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Machines</name>
         <name lang="fr" >Machines</name>
         <name lang="es" >Máquinas</name>
+        <name lang="cs" >Stroje</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/misc/qet_directory b/elements/recepteurs/misc/qet_directory
index 9e749fe74..c8673312c 100644
--- a/elements/recepteurs/misc/qet_directory
+++ b/elements/recepteurs/misc/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Misc</name>
         <name lang="fr" >Divers</name>
         <name lang="es" >Diverso</name>
+        <name lang="cs" >Různé</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/qet_directory b/elements/recepteurs/qet_directory
index 033e9818d..769f11868 100644
--- a/elements/recepteurs/qet_directory
+++ b/elements/recepteurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Receivers</name>
         <name lang="fr" >Récepteurs</name>
         <name lang="es" >Receptores</name>
+        <name lang="cs" >Přijímače</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/rlc/monofilaires/qet_directory b/elements/recepteurs/rlc/monofilaires/qet_directory
index 6f6f6c45d..a36e42aed 100644
--- a/elements/recepteurs/rlc/monofilaires/qet_directory
+++ b/elements/recepteurs/rlc/monofilaires/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Single line</name>
         <name lang="fr" >Monofilaires</name>
         <name lang="es" >Monohilos</name>
+        <name lang="cs" >Jednoduché vedení</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/rlc/normaux/qet_directory b/elements/recepteurs/rlc/normaux/qet_directory
index 0940ba772..92f706483 100644
--- a/elements/recepteurs/rlc/normaux/qet_directory
+++ b/elements/recepteurs/rlc/normaux/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Normal</name>
         <name lang="fr" >Normaux</name>
         <name lang="es" >Normales</name>
+        <name lang="cs" >Obyčejné</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/rlc/parasites/qet_directory b/elements/recepteurs/rlc/parasites/qet_directory
index 76babd791..b6e09020c 100644
--- a/elements/recepteurs/rlc/parasites/qet_directory
+++ b/elements/recepteurs/rlc/parasites/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Disturbance </name>
         <name lang="fr" >Parasites</name>
         <name lang="es" >Parásites</name>
+        <name lang="cs" >Poruchy</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/rlc/qet_directory b/elements/recepteurs/rlc/qet_directory
index e3f71fec0..f35cd7d68 100644
--- a/elements/recepteurs/rlc/qet_directory
+++ b/elements/recepteurs/rlc/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >RLC</name>
         <name lang="fr" >RLC</name>
         <name lang="es" >RLC</name>
+        <name lang="cs" >RLC</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/securite/qet_directory b/elements/recepteurs/securite/qet_directory
index 46e0ff15c..522ba9247 100644
--- a/elements/recepteurs/securite/qet_directory
+++ b/elements/recepteurs/securite/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Security</name>
         <name lang="fr" >Sécurité</name>
         <name lang="es" >Seguridad</name>
+        <name lang="cs" >Bezpečnost</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/sonores/qet_directory b/elements/recepteurs/sonores/qet_directory
index 6525a9e89..963c15857 100644
--- a/elements/recepteurs/sonores/qet_directory
+++ b/elements/recepteurs/sonores/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Sounding</name>
         <name lang="fr" >Sonores</name>
         <name lang="es" >Sonido</name>
+        <name lang="cs" >Zvuky</name>
     </names>
 </qet-directory>
diff --git a/elements/recepteurs/transformateurs/qet_directory b/elements/recepteurs/transformateurs/qet_directory
index cd6e1a44d..b9eb5de5a 100644
--- a/elements/recepteurs/transformateurs/qet_directory
+++ b/elements/recepteurs/transformateurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Transducers</name>
         <name lang="fr" >Transformateurs</name>
         <name lang="es" >Transformadores</name>
+        <name lang="cs" >Měniče</name>
     </names>
 </qet-directory>
diff --git a/elements/semiconducteurs/qet_directory b/elements/semiconducteurs/qet_directory
index 82bd9043e..9402aba52 100644
--- a/elements/semiconducteurs/qet_directory
+++ b/elements/semiconducteurs/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Semiconductors</name>
         <name lang="fr" >Semi-conducteurs</name>
         <name lang="es" >Semiconductores</name>
+        <name lang="cs" >Polovodiče</name>
     </names>
 </qet-directory>
diff --git a/elements/sources/multifilaire/qet_directory b/elements/sources/multifilaire/qet_directory
index 95e9fab44..ef1345d03 100644
--- a/elements/sources/multifilaire/qet_directory
+++ b/elements/sources/multifilaire/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Multiline</name>
         <name lang="fr" >Multifilaire</name>
         <name lang="es" >Multihilo</name>
+        <name lang="cs" >Několik vedení</name>
     </names>
 </qet-directory>
diff --git a/elements/sources/qet_directory b/elements/sources/qet_directory
index c30c8ec57..c21a553ab 100644
--- a/elements/sources/qet_directory
+++ b/elements/sources/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Sources</name>
         <name lang="fr" >Sources</name>
         <name lang="es" >Fuentes</name>
+        <name lang="cs" >Zdroje</name>
     </names>
 </qet-directory>
diff --git a/elements/sources/tevenin_norton/qet_directory b/elements/sources/tevenin_norton/qet_directory
index 52403ecac..24489693d 100644
--- a/elements/sources/tevenin_norton/qet_directory
+++ b/elements/sources/tevenin_norton/qet_directory
@@ -4,5 +4,6 @@
         <name lang="en" >Tevenin / Norton</name>
         <name lang="fr" >Tevenin / Norton</name>
         <name lang="es" >Tevenin / Norton</name>
+        <name lang="cs" >Ideální generátory (Tevenin/Norton)</name>
     </names>
 </qet-directory>