diff --git a/Contrib/Modern UI/Language files/Polish.nsh b/Contrib/Modern UI/Language files/Polish.nsh
index d869954a..3a1f52a4 100644
--- a/Contrib/Modern UI/Language files/Polish.nsh	
+++ b/Contrib/Modern UI/Language files/Polish.nsh	
@@ -1,9 +1,11 @@
 ;NSIS Modern User Interface - Language File
-;Compatible with Modern UI 1.4 and Basic Modern UI 1.61 scripts (needs te be updated!)
+;Compatible with Modern UI 1.4 (OUTDATED - NEEDS TO BE UPDATED!)
 
 ;Language: Polish (1045)
 ;By Piotr Murawski & Rafał Lampe; www.lomsel.prv.pl mailto:ppiter@skrzynka.pl
 
+!error "The Polish Modern UI Language File is very outdated and not compatible with the current version of the Modern UI. If you can update it, please send us your updated version!"
+
 ;--------------------------------
 
 !insertmacro MUI_LANGUAGEFILE_BEGIN "POLISH"