--- a/misc/iwgtk.service
+++ b/misc/iwgtk.service
@@ -6,7 +6,8 @@ PartOf=graphical-session.target
 After=graphical-session.target
 
 [Service]
-ExecStart=iwgtk -i
+ExecStart=@out@/bin/iwgtk -i
+PassEnvironment=DISPLAY XAUTHORITY
 Restart=on-failure
 
 [Install]