diff --git a/include/osmocom/msc/msc_a.h b/include/osmocom/msc/msc_a.h
index fd0aa08..e56ea52 100644
--- a/include/osmocom/msc/msc_a.h
+++ b/include/osmocom/msc/msc_a.h
@@ -181,6 +181,7 @@
 unsigned int msc_a_pending_cm_service_req_count(struct msc_a *msc_a, enum osmo_cm_service_type type);
 void msc_a_pending_cm_service_req_del(struct msc_a *msc_a, enum osmo_cm_service_type type);
 bool msc_a_is_ciphering_to_be_attempted(const struct msc_a *msc_a);
+bool msc_a_is_ciphering_required(const struct msc_a *msc_a);
 
 #define msc_a_ran_down(A,B,C) \
 	_msc_a_ran_down(A,B,C, __FILE__, __LINE__)