fix syntax error
diff --git a/src/map_helper.erl b/src/map_helper.erl
index f25a5f6..a2e7ebf 100644
--- a/src/map_helper.erl
+++ b/src/map_helper.erl
@@ -171,7 +171,7 @@
rec4op({local, ?MAP_OP_ALERT_SC}) -> 'AlertServiceCentre';
rec4op({local, ?MAP_OP_INFORM_SC}) -> 'InformServiceCentre';
rec4op({local, ?MAP_OP_READY_FOR_SM}) -> 'ReadyForSM-';
-rec4op({local, ?MAP_OP_MT_FW_SMS_VGCS}) -> 'MT-ForwardSM-VGCS-';
+rec4op({local, ?MAP_OP_MT_FW_SMS_VGCS}) -> 'MT-ForwardSM-VGCS-'.
% FIXME: SS-Operations.asn, SupplementaryServiceOperations, MAP-CallHandlingOperations, MAP-LocationServiceOperations
argres(arg) -> "Arg";