diff --git a/ggsn_tests/gen_links.sh b/ggsn_tests/gen_links.sh
index 1ab8009..c04d19e 100755
--- a/ggsn_tests/gen_links.sh
+++ b/ggsn_tests/gen_links.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 BASEDIR=../deps
 
@@ -48,5 +48,6 @@
 gen_links $DIR $FILES
 
 DIR=../library
-FILES="General_Types.ttcn GSM_Types.ttcn Osmocom_Types.ttcn Native_Functions.ttcn Native_FunctionDefs.cc IPCP_Types.ttcn"
+FILES="General_Types.ttcn GSM_Types.ttcn Osmocom_Types.ttcn Native_Functions.ttcn Native_FunctionDefs.cc IPCP_Types.ttcn "
+FILES+="GTP_CodecPort.ttcn GTP_CodecPort_CtrlFunct.ttcn GTP_CodecPort_CtrlFunctDef.cc "
 gen_links $DIR $FILES