--- startDM-sd.sh	2017-04-02 15:00:12.041656336 +0200
+++ startDM.sh	2017-04-02 14:48:43.991090773 +0200
@@ -5,8 +5,12 @@
 # We need to source /etc/profile for stuff like $LANG to work
 # bug #10190.
 . /etc/profile
-
+if [ -f /etc/init.d/functions.sh ]; then
 . /etc/init.d/functions.sh
+else
+    echo "Only available on openrc"
+    exit 0
+fi
 
 # baselayout-1 compat
 if ! type get_options >/dev/null 2>/dev/null ; then