diff --git a/openbsc/include/openbsc/silent_call.h b/openbsc/include/openbsc/silent_call.h
index 2492903..619a543 100644
--- a/openbsc/include/openbsc/silent_call.h
+++ b/openbsc/include/openbsc/silent_call.h
@@ -6,7 +6,10 @@
 extern int gsm_silent_call_start(struct gsm_subscriber *subscr,
                                  void *data, int type);
 extern int gsm_silent_call_stop(struct gsm_subscriber *subscr);
+
+#if 0
 extern int silent_call_rx(struct gsm_subscriber_connection *conn, struct msgb *msg);
 extern int silent_call_reroute(struct gsm_subscriber_connection *conn, struct msgb *msg);
+#endif
 
 #endif /* _SILENT_CALL_H */