--- 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`