diff --git a/ggsn_tests/GGSN_Tests.default b/ggsn_tests/GGSN_Tests.default
index 33b96cb..9832ba1 100644
--- a/ggsn_tests/GGSN_Tests.default
+++ b/ggsn_tests/GGSN_Tests.default
@@ -21,6 +21,6 @@
 GGSN_Tests.m_ggsn_ip6_dns1 := "2001:4860:4860::8888"
 GGSN_Tests.m_ggsn_ip6_dns2 := "2001:4860:4860::8844"
 Osmocom_VTY_Functions.mp_prompt_prefix := "OsmoGGSN";
-GTP_CodecPort.mp_pl_SystemUnderTest := GGSN;
+GTPv1C_CodecPort.mp_pl_SystemUnderTest := GGSN;
 
 [EXECUTE]