diff --git a/lib/python/ServiceReference.py b/lib/python/ServiceReference.py
index b18074f6707..6fc77860e01 100644
--- a/lib/python/ServiceReference.py
+++ b/lib/python/ServiceReference.py
@@ -18,7 +18,7 @@ def isPlayableForCur(serviceref):
 
 def resolveAlternate(serviceref):
 	nref = None
-	if serviceref.flags & eServiceReference.isGroup:
+	if serviceref and serviceref.flags & eServiceReference.isGroup:
 		nref = getBestPlayableServiceReference(serviceref, getPlayingRef())
 		if not nref:
 			nref = getBestPlayableServiceReference(serviceref, eServiceReference(), True)