diff --git a/elements/10_electric/20_manufacturers_articles/siemens/01_PLC&controllers/qet_directory b/elements/10_electric/20_manufacturers_articles/siemens/01_PLC&controllers/qet_directory
index 1e237b838..0be589bbf 100644
--- a/elements/10_electric/20_manufacturers_articles/siemens/01_PLC&controllers/qet_directory
+++ b/elements/10_electric/20_manufacturers_articles/siemens/01_PLC&controllers/qet_directory
@@ -3,6 +3,7 @@
         <name lang="en">PLC and controllers</name>
         <name lang="fr">API et commandes</name>
         <name lang="it">PLC e controllori</name>
+        <name lang="pl">Sterowniki PLC i kontrolery</name>
         <name lang="de">SPS und Steuerungen</name>
     </names>
 </qet-directory>
diff --git a/elements/10_electric/20_manufacturers_articles/siemens/02_human_machine_interface/qet_directory b/elements/10_electric/20_manufacturers_articles/siemens/02_human_machine_interface/qet_directory
index 10fd48e0c..778a47f94 100644
--- a/elements/10_electric/20_manufacturers_articles/siemens/02_human_machine_interface/qet_directory
+++ b/elements/10_electric/20_manufacturers_articles/siemens/02_human_machine_interface/qet_directory
@@ -4,6 +4,7 @@
         <name lang="fr">Interfaces homme/machine</name>
         <name lang="it">Interfaccia uomo/macchina (HMI)</name>
         <name lang="de">Mensch/Maschine-Schnittstellen</name>
+        <name lang="pl">Mens/Interfejsy człowiek-urządzenie</name>
         <name lang="nl">Mens/Machine Interface</name>
     </names>
 </qet-directory>