diff --git a/include/openbsc/gsm_04_11.h b/include/openbsc/gsm_04_11.h
index 7167a55..b53d17d 100644
--- a/include/openbsc/gsm_04_11.h
+++ b/include/openbsc/gsm_04_11.h
@@ -70,4 +70,7 @@
 
 int gsm0411_send_sms(struct gsm_lchan *lchan, struct sms_deliver *sms);
 
+struct msgb *gsm411_msgb_alloc(void);
+int gsm0411_sendmsg(struct msgb *msg);
+
 #endif