diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 9c5123e..adfa096 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -187,6 +187,7 @@
 gsm0808_create_handover_required_reject;
 gsm0808_create_handover_request;
 gsm0808_create_handover_request_ack;
+gsm0808_create_handover_request_ack2;
 gsm0808_create_handover_command;
 gsm0808_create_handover_detect;
 gsm0808_create_handover_succeeded;