diff --git a/include/osmocom/ranap/ranap_msg_factory.h b/include/osmocom/ranap/ranap_msg_factory.h
index f1f3fcc..d89a1ae 100644
--- a/include/osmocom/ranap/ranap_msg_factory.h
+++ b/include/osmocom/ranap/ranap_msg_factory.h
@@ -13,6 +13,9 @@
 struct msgb *ranap_new_msg_dt(uint8_t sapi, const uint8_t *nas, unsigned int nas_len);
 
 /*! \brief generate RANAP SECURITY MODE COMMAND message */
+struct msgb *ranap_new_msg_sec_mod_cmd2(const uint8_t *ik, const uint8_t *ck, enum RANAP_KeyStatus status,
+                                       uint8_t uia_bitmask, uint8_t uea_bitmask);
+
 struct msgb *ranap_new_msg_sec_mod_cmd(const uint8_t *ik, const uint8_t *ck, enum RANAP_KeyStatus status);
 
 /*! \brief generate RANAP SECURITY MODE COMPLETE message */