diff --git a/startkde/startplasmacompositor.cmake b/startkde/startplasmacompositor.cmake
--- a/startkde/startplasmacompositor.cmake
+++ b/startkde/startplasmacompositor.cmake
@@ -3,6 +3,19 @@
 #  DEFAULT Plasma STARTUP SCRIPT ( @PROJECT_VERSION@ )
 #
 
+# read in arguments to script
+while [ $# -gt 0 ]; do
+    case "$1" in
+      --socket=*)
+        WAYLAND_SOCKET="${1#*=}"
+        ;;
+      *)
+        echo "Error: Invalid argument to startplasmacompositor script. Abort."
+        exit 1
+    esac
+    shift
+done
+
 # We need to create config folder so we can write startupconfigkeys
 if [  ${XDG_CONFIG_HOME} ]; then
   configDir=$XDG_CONFIG_HOME;
@@ -231,7 +244,15 @@
   exit 1
 fi
 
-@KWIN_WAYLAND_BIN_PATH@ --xwayland --libinput --exit-with-session=@CMAKE_INSTALL_FULL_LIBEXECDIR@/startplasma
+
+if [ -z "$WAYLAND_SOCKET" ]; then
+    echo "Starting KWin as Wayland server on default Wayland socket.";
+    @KWIN_WAYLAND_BIN_PATH@ --xwayland --libinput --exit-with-session=@CMAKE_INSTALL_FULL_LIBEXECDIR@/startplasma
+else
+    echo "Starting KWin as Wayland server on Wayland socket '$WAYLAND_SOCKET'.";
+    @KWIN_WAYLAND_BIN_PATH@ --xwayland --libinput --socket "$WAYLAND_SOCKET" --exit-with-session=@CMAKE_INSTALL_FULL_LIBEXECDIR@/startplasma
+fi
+
 
 echo 'startplasmacompositor: Shutting down...'  1>&2