diff --git a/PowerEditor/installer/nsisInclude/mainSectionFuncs.nsh b/PowerEditor/installer/nsisInclude/mainSectionFuncs.nsh
index 25abc012..1c5e0e39 100644
--- a/PowerEditor/installer/nsisInclude/mainSectionFuncs.nsh
+++ b/PowerEditor/installer/nsisInclude/mainSectionFuncs.nsh
@@ -113,6 +113,7 @@ Function copyCommonFiles
 
 	; Markdown in user defined languages
 	SetOutPath "$UPDATE_PATH\userDefineLangs\"
+	Delete "$UPDATE_PATH\userDefineLangs\userDefinedLang-markdown.default.modern.xml"
 	File "..\bin\userDefineLangs\markdown._preinstalled.udl.xml"
 
 	; Localization