diff --git a/packaging/windows/lang_extra.nsh b/packaging/windows/lang_extra.nsh
index 5565fd98c..a86763ff3 100644
--- a/packaging/windows/lang_extra.nsh
+++ b/packaging/windows/lang_extra.nsh
@@ -40,25 +40,25 @@
         LangString var4              ${LANG_POLISH}  "Examples of diagrams"
         
         
-        LangString installed         ${LANG_GREEK} "${SOFT_NAME} is already installed. $\n$\nClick `OK` to remove the previous version or `Cancel` to cancel this upgrade." 
-        LangString wrongArch         ${LANG_GREEK} "This distribution is for 64 bits computers only."
-        LangString Elements          ${LANG_GREEK}  "Elements"
-        LangString Electric          ${LANG_GREEK}  "Electric"
-        LangString Logic             ${LANG_GREEK}  "Logic"
-        LangString Hydraulic         ${LANG_GREEK}  "Hydraulic"
-        LangString Pneumatic         ${LANG_GREEK}  "Pneumatic"
-        LangString Energy            ${LANG_GREEK}  "Energy"
-        LangString water             ${LANG_GREEK}  "Water"
-        LangString Refrigeration     ${LANG_GREEK}  "Refrigeration"
-        LangString Solar_thermal     ${LANG_GREEK}  "Solar_thermal"
-        LangString Lang              ${LANG_GREEK}  "Lang"
-        LangString Titleblocks       ${LANG_GREEK}  "Titleblocks"
-        LangString Examples          ${LANG_GREEK}  "Examples"
-        LangString Check             ${LANG_GREEK}  "Check to start ${SOFT_NAME}"
-        LangString var1              ${LANG_GREEK}  "Elements of the official collection"
-        LangString var2              ${LANG_GREEK}  "languagues files"
+        LangString installed         ${LANG_GREEK}  "${SOFT_NAME} είναι ήδη εγκατεστημένο. $\n$\nΠάτησε `OK` για αφαίρεση της προηγούμενης έκδοσης ή `Cancel` για ακύρωση της αναβάθμισης." 
+        LangString wrongArch         ${LANG_GREEK}  "Αυτή η διανομή είναι μόνο για 64μπιτους υπολογιστές."
+        LangString Elements          ${LANG_GREEK}  "Στοιχεία"
+        LangString Electric          ${LANG_GREEK}  "Ηλεκτρικά"
+        LangString Logic             ${LANG_GREEK}  "Λογικά"
+        LangString Hydraulic         ${LANG_GREEK}  "Υδραυλικά"
+        LangString Pneumatic         ${LANG_GREEK}  "Πνευματικά"
+        LangString Energy            ${LANG_GREEK}  "Ενέργεια"
+        LangString water             ${LANG_GREEK}  "Νερό"
+        LangString Refrigeration     ${LANG_GREEK}  "Ψύξη"
+        LangString Solar_thermal     ${LANG_GREEK}  "Ηλιοθερμία"
+        LangString Lang              ${LANG_GREEK}  "Γλώσσα"
+        LangString Titleblocks       ${LANG_GREEK}  "Πινακίδες"
+        LangString Examples          ${LANG_GREEK}  "Παραδείγματα"
+        LangString Check             ${LANG_GREEK}  "Επιλέξτε για εκκίνηση ${SOFT_NAME}"
+        LangString var1              ${LANG_GREEK}  "Στοιχεία της επίσημης συλλογής"
+        LangString var2              ${LANG_GREEK}  "Αρχεία γλωσσών"
         LangString var3              ${LANG_GREEK}  "Examples of cartridges"
-        LangString var4              ${LANG_GREEK}  "Examples of diagrams"
+        LangString var4              ${LANG_GREEK}  "Παραδείγματα διαγραμμάτων"
         
         
         LangString installed         ${LANG_CZECH} "${SOFT_NAME} is already installed. $\n$\nClick `OK` to remove the previous version or `Cancel` to cancel this upgrade." 
@@ -291,4 +291,4 @@
         LangString var2              ${LANG_DUTCH}  "languagues files"
         LangString var3              ${LANG_DUTCH}  "Examples of cartridges"
         LangString var4              ${LANG_DUTCH}  "Examples of diagrams"
-        
\ No newline at end of file
+