Index: apps/app_queue.c
===================================================================
--- apps/app_queue.c	(revision 220668)
+++ apps/app_queue.c	(working copy)
@@ -597,6 +597,7 @@
 static int queue_cmp_cb(void *obj, void *arg, int flags)
 {
 	struct call_queue *q = obj, *q2 = arg;
+	if (ast_strlen_zero(q->name) || ast_strlen_zero(q2->name)) return 0;
 	return !strcasecmp(q->name, q2->name) ? CMP_MATCH | CMP_STOP : 0;
 }