diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 077daba..00d3d3f 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -1121,6 +1121,11 @@
 	var my_BooleanList allow_attach := { false, false, false };
 	f_init_statsd("VirtMSC", vc_STATSD, mp_test_ip, mp_bsc_statsd_port);
 
+	/* Make sure each MSC's internal state is "DISCONNECTED" at first */
+	for (bssap_idx := 0; bssap_idx < NUM_MSC; bssap_idx := bssap_idx+1) {
+		f_vty_transceive(BSCVTY, "msc " & int2str(bssap_idx) & " bssmap reset", strict := false);
+	}
+
 	for (bssap_idx := 0; bssap_idx < nr_msc; bssap_idx := bssap_idx+1) {
 		allow_attach[bssap_idx] := true;
 		/* Call a function of our 'parent component' RAN_Adapter_CT to start the