diff --git a/installer/installer.kmdr b/installer/installer.kmdr
index 332ea1c..8e65876 100755
--- a/installer/installer.kmdr
+++ b/installer/installer.kmdr
@@ -3464,7 +3464,7 @@ fi
                 <stringlist>
                     <string>if [ "$DESKTOP_SESSION" == "gnome" ]; then
    gnome-session-save --shutdown-dialog
-elif [ "${DESKTOP_SESSION:0:3}" == "kde" -a -x /usr/bin/qdbus ]; then
+elif [ "${DESKTOP_SESSION:0:3}" == "kde" -o "${KDE_FULL_SESSION}" == "true" ]; then
    /usr/bin/qdbus org.kde.ksmserver /KSMServer logout 0 1 2
 elif [ "${DESKTOP_SESSION:0:3}" == "kde" ]; then
    dcop ksmserver ksmserver logout 0 1 1