diff --git a/gbproxy/GBProxy_Tests.ttcn b/gbproxy/GBProxy_Tests.ttcn
index 2797a2ca9..5bb77d325 100644
--- a/gbproxy/GBProxy_Tests.ttcn
+++ b/gbproxy/GBProxy_Tests.ttcn
@@ -375,6 +375,7 @@ function f_init() runs on test_CT {
 	}
 	f_sleep(4.0);
 	for (i := 0; i < lengthof(mp_nsconfig_pcu); i := i+1) {
+		f_vty_transceive(GBPVTY, "nsvc nsei " & int2str(g_pcu[i].cfg.nsei) & " force-unconfigured");
 		f_init_gb_pcu(g_pcu[i], "GbProxy_Test", i);
 	}