diff --git a/bsc-nat/BSCNAT_Tests.ttcn b/bsc-nat/BSCNAT_Tests.ttcn
index 41d58d7..1b24855 100644
--- a/bsc-nat/BSCNAT_Tests.ttcn
+++ b/bsc-nat/BSCNAT_Tests.ttcn
@@ -151,7 +151,7 @@
 
 	f_init_vty("VirtBSCNAT");
 	f_vty_allow_osmux(use_osmux);
-	f_ipa_ctrl_start(mp_nat_ip, mp_nat_ctrl_port);
+	f_ipa_ctrl_start_client(mp_nat_ip, mp_nat_ctrl_port);
 
 	for (i := 0; i < NUM_MSC; i := i+1) {
 		f_init_MscState(msc[i], mp_msc_pc +i, mp_bsc_pc, mp_msc_ssn, mp_bsc_ssn);