diff --git a/pgw/PGW_Tests.ttcn b/pgw/PGW_Tests.ttcn
index 34090d2..d9f4979 100644
--- a/pgw/PGW_Tests.ttcn
+++ b/pgw/PGW_Tests.ttcn
@@ -126,6 +126,7 @@
 		local_sctp_port := mp_pcrf_local_port,
 		origin_host := "pcrf.localdomain",
 		origin_realm := "localdomain",
+		auth_app_id := omit,
 		vendor_app_id := c_DIAMETER_3GPP_Gx_AID
 	};
 	vc_DIAMETER := DIAMETER_Emulation_CT.create(id);