diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index cd1a114..1ce0b69 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -642,13 +642,13 @@
 	setverdict(pass);
 }
 
-function f_expect_lu_reject() runs on BSC_ConnHdlr {
+function f_expect_lu_reject(template OCT1 cause := ?) runs on BSC_ConnHdlr {
 	var PDU_DTAP_MT dtap_mt;
 	timer T := 5.0;
 
 	T.start;
 	alt {
-	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Rej)) {
+	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Rej(cause))) {
 		setverdict(pass);
 		}
 	[] BSSAP.receive(tr_PDU_DTAP_MT(?)) -> value dtap_mt {