diff --git a/knights/knights.desktop b/knights/knights.desktop
index 62e359b..2514fd4 100644
--- a/knights/knights.desktop
+++ b/knights/knights.desktop
@@ -8,10 +8,10 @@ Name[de]=Knights
 GenericName=Chess Game
 Comment=A graphical chess interface
 Comment[de]=A graphical chess interface
-InitialPreference=1
+X-TDE-InitialPreference=1
 MimeType=application/x-chess-pgn,Application
-ServiceTypes=
-DocPath=knights/index.html
+X-TDE-ServiceTypes=
+X-DocPath=knights/index.html
 Terminal=false