diff --git a/tests/bsc/bsc_test.c b/tests/bsc/bsc_test.c
index 86d8972..d999608 100644
--- a/tests/bsc/bsc_test.c
+++ b/tests/bsc/bsc_test.c
@@ -223,7 +223,7 @@
 	OSMO_ASSERT(0);
 }
 
-void bsc_sapi_n_reject(struct gsm_subscriber_connection *conn, uint8_t dlci) {}
+void bsc_sapi_n_reject(struct gsm_subscriber_connection *conn, uint8_t dlci, enum gsm0808_cause cause) {}
 void bsc_cipher_mode_compl(struct gsm_subscriber_connection *conn, struct msgb *msg, uint8_t chosen_encr) {}
 int bsc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg, uint16_t chosen_channel)
 { return 0; }