diff -Naur rygel-0.18.4.old/src/plugins/external/rygel-external-container.vala rygel-0.18.4/src/plugins/external/rygel-external-container.vala
--- rygel-0.18.4.old/src/plugins/external/rygel-external-container.vala	2013-12-06 12:23:44.211641077 +0100
+++ rygel-0.18.4/src/plugins/external/rygel-external-container.vala	2013-12-06 12:26:20.320782137 +0100
@@ -55,6 +55,10 @@
         this.containers = new ArrayList<Container> ();
         this.search_classes = new ArrayList<string> ();
 
+        // default: use sort order of external container, no additional
+        // sort criteria
+        this.sort_criteria = "";
+
         // Create proxy to MediaContainer iface
         this.actual_container = Bus.get_proxy_sync
                                         (BusType.SESSION,
