diff --git a/tmp/postinstall b/tmp/postinstall
index b92ff1b..d35a91a 100644
--- a/tmp/postinstall
+++ b/tmp/postinstall
@@ -78,3 +78,4 @@ sed -i "s/^#\(AntiAliasing=\).*$/\1true/" /opt/kde/share/config/kdm/kdmrc
 sed -i "s/^#\(NumLock=\).*$/\1On/" /opt/kde/share/config/kdm/kdmrc 
 sed -i "s/^#\(Language=\).*$/\1de_DE/" /opt/kde/share/config/kdm/kdmrc 
 sed -i "s/^\(Theme=\).*$/\1\/opt\/kde\/share\/apps\/kdm\/themes\/Viitor/" /opt/kde/share/config/kdm/kdmrc 
+update-desktop-database /opt/kde/share/applications/kde4