diff --git a/openbsc/tests/channel/channel_test.c b/openbsc/tests/channel/channel_test.c
index e9badad..9fb1e9e 100644
--- a/openbsc/tests/channel/channel_test.c
+++ b/openbsc/tests/channel/channel_test.c
@@ -46,9 +46,12 @@
 }
 
 /* mock object for testing, directly invoke the cb... maybe later through the timer */
-void paging_request(struct gsm_bts *bts, struct gsm_subscriber *subscriber, int type, gsm_cbfn *cbfn, void *data)
+int paging_request(struct gsm_bts *bts, struct gsm_subscriber *subscriber, int type, gsm_cbfn *cbfn, void *data)
 {
 	cbfn(101, 200, (void*)0x1323L, &s_conn, data);
+
+	/* claim we have patched */
+	return 1;
 }