diff --git a/openbsc/src/osmo-bsc/osmo_bsc_filter.c b/openbsc/src/osmo-bsc/osmo_bsc_filter.c
index 5ad9fd7..6b15886 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_filter.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_filter.c
@@ -47,7 +47,7 @@ static void handle_lu_request(struct gsm_subscriber_connection *conn,
 	gsm48_generate_lai(&lai, net->country_code, net->network_code,
 			   conn->bts->location_area_code);
 
-	if (memcmp(&lai, &lu->lai, sizeof(lai)) != 0) {
+	if (memcmp(&lai, &lu->lai, sizeof(lai))) {
 		LOGP(DMSC, LOGL_DEBUG, "Marking con for welcome USSD.\n");
 		conn->sccp_con->new_subscriber = 1;
 	}
@@ -314,13 +314,10 @@ static int bsc_patch_mm_info(struct gsm_subscriber_connection *conn,
 
 static int has_core_identity(struct osmo_msc_data *msc)
 {
-	if (msc->core_mnc != -1)
-		return 1;
-	if (msc->core_mcc != -1)
-		return 1;
-	if (msc->core_lac != -1)
-		return 1;
-	if (msc->core_ci != -1)
+	if ((msc->core_mnc != -1) ||
+	    (msc->core_mcc != -1) ||
+	    (msc->core_lac != -1) ||
+	    (msc->core_ci != -1))
 		return 1;
 	return 0;
 }
@@ -367,7 +364,6 @@ int bsc_scan_msc_msg(struct gsm_subscriber_connection *conn, struct msgb *msg)
 
 		if (conn->sccp_con->new_subscriber)
 			return send_welcome_ussd(conn);
-		return 0;
 	} else if (mtype == GSM48_MT_MM_INFO) {
 		bsc_patch_mm_info(conn, &gh->data[0], length);
 	}