diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 873ec5bd3..7b3188a12 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -619,7 +619,7 @@ private function f_mm_ciph_geran() runs on BSC_ConnHdlr
 	var OCT1 a5_perm_alg;
 	var PDU_BSSAP pdu;
 
-	if (g_pars.net.expect_ciph) {
+	if (not g_pars.net.expect_ciph) {
 		/* There is nothing to do */
 		return;
 	}