diff --git a/include/osmocom/msc/msc_a.h b/include/osmocom/msc/msc_a.h
index a5b624c..d180e38 100644
--- a/include/osmocom/msc/msc_a.h
+++ b/include/osmocom/msc/msc_a.h
@@ -137,6 +137,8 @@
 		/* There may be up to 7 incoming calls for this subscriber. This is the currently serviced voice call,
 		 * as in, the other person the subscriber is currently talking to. */
 		struct gsm_trans *active_trans;
+
+		struct osmo_timer_list assignment_request_pending;
 	} cc;
 
 	struct msc_ho_state ho;