diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 0a6742c..f98f7c9 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -469,6 +469,7 @@
 osmo_gsup_encode;
 osmo_gsup_decode;
 osmo_gsup_message_type_names;
+osmo_gsup_get_err_msg_type;
 
 osmo_oap_encode;
 osmo_oap_decode;