Index: channels/sip/dialplan_functions.c
===================================================================
--- channels/sip/dialplan_functions.c	(revision 396157)
+++ channels/sip/dialplan_functions.c	(working copy)
@@ -397,9 +397,9 @@
 	ast_free(varstr);
 	ast_free(buffer);
 
-	/* This unref will take care of destroying the channel, RTP instance, and SIP pvt */
+	/* This unlink will take care of destroying the channel, RTP instance, and SIP pvt */
 	if (p) {
-		dialog_unref(p, "Destroy test object");
+		dialog_unlink_all(p);
 	}
 	ast_rtp_engine_unregister(&test_engine);
 	return res;