--- xdg-utils-1.1.0~/scripts/xdg-su.in	2015-08-04 18:07:16.197000000 +0300

+++ xdg-utils-1.1.0/scripts/xdg-su.in	2015-08-04 18:10:12.466000000 +0300

@@ -33,7 +33,9 @@ _USAGE

 su_kde()

 {

-    if [ x"$KDE_SESSION_VERSION" = x"4" ]; then

+    if [ x"$KDE_SESSION_VERSION" = x"5" ]; then

+        KDESU=/usr/libexec/kf5/kdesu

+    elif [ x"$KDE_SESSION_VERSION" = x"4" ]; then

         KDESU=`kde4-config --locate kdesu --path exe 2>/dev/null`

     else

         KDESU=`which kdesu 2>/dev/null`