diff --git a/openbsc/include/openbsc/gsm_04_08.h b/openbsc/include/openbsc/gsm_04_08.h
index 23a5d10..9671555 100644
--- a/openbsc/include/openbsc/gsm_04_08.h
+++ b/openbsc/include/openbsc/gsm_04_08.h
@@ -31,8 +31,8 @@
 enum gsm_chreq_reason_t get_reason_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci);
 
 int gsm48_tx_mm_info(struct gsm_subscriber_connection *conn);
-int gsm48_tx_mm_auth_req(struct gsm_lchan *lchan, u_int8_t *rand, int key_seq);
-int gsm48_tx_mm_auth_rej(struct gsm_lchan *lchan);
+int gsm48_tx_mm_auth_req(struct gsm_subscriber_connection *conn, u_int8_t *rand, int key_seq);
+int gsm48_tx_mm_auth_rej(struct gsm_subscriber_connection *conn);
 int gsm48_send_rr_release(struct gsm_lchan *lchan);
 int gsm48_send_rr_ciph_mode(struct gsm_lchan *lchan, int want_imeisv);
 int gsm48_send_rr_app_info(struct gsm_lchan *lchan, u_int8_t apdu_id,