diff --git a/src/mod/endpoints/mod_rtmp/mod_rtmp.c b/src/mod/endpoints/mod_rtmp/mod_rtmp.c
index 1e772866d0..2ee823da5b 100644
--- a/src/mod/endpoints/mod_rtmp/mod_rtmp.c
+++ b/src/mod/endpoints/mod_rtmp/mod_rtmp.c
@@ -250,6 +250,7 @@ switch_status_t rtmp_on_hangup(switch_core_session_t *session)
 	rtmp_private_t *tech_pvt = NULL;
 	rtmp_session_t *rsession = NULL;
 
+	switch_core_session_write_lock(session);
 	channel = switch_core_session_get_channel(session);
 	assert(channel != NULL);
 
@@ -299,6 +300,7 @@ switch_status_t rtmp_on_hangup(switch_core_session_t *session)
 	switch_thread_rwlock_unlock(rsession->rwlock);
 
  done:
+	switch_core_session_rwunlock(session);
 	return SWITCH_STATUS_SUCCESS;
 }