diff --git a/library/BSSGP_Emulation.ttcnpp b/library/BSSGP_Emulation.ttcnpp
index 87b35ac..a4a939d 100644
--- a/library/BSSGP_Emulation.ttcnpp
+++ b/library/BSSGP_Emulation.ttcnpp
@@ -359,7 +359,7 @@
 /* We are in BVC_S_WAIT_NS_ALIVE_UNBLOCKED (only happens in BSS role) */
 altstep as_sig_wait_ns_alive_unblocked() runs on BSSGP_CT {
 	var NsStatusIndication nsi;
-	[] BSCP.receive(NsStatusIndication:{?,?, complement (NSVC_S_ALIVE_UNBLOCKED), NSVC_S_ALIVE_UNBLOCKED}) -> value nsi {
+	[] BSCP.receive(NsStatusIndication:{g_cfg.nsei,?, complement (NSVC_S_ALIVE_UNBLOCKED), NSVC_S_ALIVE_UNBLOCKED}) -> value nsi {
 		/* if we just became NS-unblocked, send a BCC-RESET */
 		if (g_cfg.sgsn_role == false) {
 			BSCP.send(f_BnsUdReq(ts_BVC_RESET(BSSGP_CAUSE_OM_INTERVENTION, 0, omit), 0));
@@ -450,7 +450,11 @@
 		}
 	}
 	/* Keep NS Status Indicaitons to us; no need to inform per-BVC components [for now?] */
-	[] BSCP.receive(NsStatusIndication:?) -> value nsi { }
+	[] BSCP.receive(NsStatusIndication:{g_cfg.nsei, ?, ?, ?}) -> value nsi { }
+	/* We should never see any different NSEI: There's one BSSGP_CT per NSE */
+	[] BSCP.receive(NsStatusIndication:{?, ?, ?, ?}) -> value nsi {
+		setverdict(fail, "Rx NsStatusInd for wrong NSEI ", nsi);
+	}
 
 	/* Procedure port request to resolve the per-BVC component for a given ptp BVCI */
 	[] PROC.getcall(BSSGP_get_bvci_ct:{?}) -> param(bvci) sender vc_conn {