diff --git a/include/osmocom/msc/gsm_04_80.h b/include/osmocom/msc/gsm_04_80.h
index b786dcc..bb6573b 100644
--- a/include/osmocom/msc/gsm_04_80.h
+++ b/include/osmocom/msc/gsm_04_80.h
@@ -2,16 +2,13 @@
 
 #include <stdint.h>
 
-struct ran_conn;
+struct msc_a;
 
-int msc_send_ussd_reject(struct ran_conn *conn,
-			     uint8_t transaction_id, int invoke_id,
-			     uint8_t problem_tag, uint8_t problem_code);
+int msc_send_ussd_reject(struct msc_a *msc_a, uint8_t transaction_id, int invoke_id,
+			 uint8_t problem_tag, uint8_t problem_code);
 
-int msc_send_ussd_notify(struct ran_conn *conn, int level,
-			 const char *text);
-int msc_send_ussd_release_complete(struct ran_conn *conn,
-				   uint8_t transaction_id);
-int msc_send_ussd_release_complete_cause(struct ran_conn *conn,
+int msc_send_ussd_notify(struct msc_a *msc_a, int level, const char *text);
+int msc_send_ussd_release_complete(struct msc_a *msc_a, uint8_t transaction_id);
+int msc_send_ussd_release_complete_cause(struct msc_a *msc_a,
 					 uint8_t transaction_id,
 					 uint8_t cause_loc, uint8_t cause_val);