diff --git a/gbproxy/GBProxy_Tests.ttcn b/gbproxy/GBProxy_Tests.ttcn
index ddf98a9..3f822c2 100644
--- a/gbproxy/GBProxy_Tests.ttcn
+++ b/gbproxy/GBProxy_Tests.ttcn
@@ -447,8 +447,8 @@
 private function f_init_gb_pcu(inout GbInstance gb, charstring id, integer offset) runs on test_CT {
 	var charstring ns_id := id & "-NS(PCU[" & int2str(offset) & "])";
 	var charstring bssgp_id := id & "-BSSGP(PCU[" & int2str(offset) & "])";
-	gb.vc_NS := NS_CT.create(ns_id);
-	gb.vc_BSSGP := BSSGP_CT.create(bssgp_id);
+	gb.vc_NS := NS_CT.create(ns_id) alive;
+	gb.vc_BSSGP := BSSGP_CT.create(bssgp_id) alive;
 	/* connect lower end of BSSGP emulation with NS upper port */
 	connect(gb.vc_BSSGP:BSCP, gb.vc_NS:NS_SP);
 
@@ -470,8 +470,8 @@
 private function f_init_gb_sgsn(inout GbInstance gb, charstring id, integer offset) runs on test_CT {
 	var charstring ns_id := id & "-NS(SGSN[" & int2str(offset) & "])";
 	var charstring bssgp_id := id & "-BSSGP(SGSN[" & int2str(offset) & "])";
-	gb.vc_NS := NS_CT.create(ns_id);
-	gb.vc_BSSGP := BSSGP_CT.create(bssgp_id);
+	gb.vc_NS := NS_CT.create(ns_id) alive;
+	gb.vc_BSSGP := BSSGP_CT.create(bssgp_id) alive;
 	/* connect lower end of BSSGP emulation with NS upper port */
 	connect(gb.vc_BSSGP:BSCP, gb.vc_NS:NS_SP);