diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 5bb189f..9c5123e 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -312,6 +312,7 @@
 gsm48_encode_ra;
 gsm48_hdr_gmm_cipherable;
 gsm48_decode_bcd_number;
+gsm48_decode_bcd_number2;
 gsm48_decode_bearer_cap;
 gsm48_decode_called;
 gsm48_decode_callerid;