diff --git a/pgw/PGW_Tests.ttcn b/pgw/PGW_Tests.ttcn
index c526fa2..75dcb83 100644
--- a/pgw/PGW_Tests.ttcn
+++ b/pgw/PGW_Tests.ttcn
@@ -115,7 +115,8 @@
 friend function f_init_diameter(charstring id) runs on PGW_Test_CT {
 	var DIAMETEROps ops := {
 		create_cb := refers(DIAMETER_Emulation.ExpectedCreateCallback),
-		unitdata_cb := refers(DiameterForwardUnitdataCallback)
+		unitdata_cb := refers(DiameterForwardUnitdataCallback),
+		raw := false /* handler mode (IMSI based routing) */
 	};
 	var DIAMETER_conn_parameters pars := {
 		remote_ip := mp_pgw_hostname,