--- sleepproxyclient.sh	2016-06-01 21:34:30.000000000 +0200
+++ sleepproxyclient.sh	2016-06-01 21:39:06.000000000 +0200
@@ -21,7 +21,8 @@ 
 
 
 # get defaults
-. /etc/default/sleepproxyclient
+. /etc/sleepproxyclient &>/dev/null ||
+. /etc/default/sleepproxyclient &>/dev/null
 
 
 IF_OPT=""