diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c
index 727c49ad4..7abb028dd 100644
--- a/wpa_supplicant/scan.c
+++ b/wpa_supplicant/scan.c
@@ -1,6 +1,6 @@
 /*
  * WPA Supplicant - Scanning
- * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2003-2019, Jouni Malinen <j@w1.fi>
  *
  * This software may be distributed under the terms of the BSD license.
  * See README for more details.
@@ -1993,7 +1993,8 @@ static int wpa_scan_result_compar(const void *a, const void *b)
 	/* if SNR is close, decide by max rate or frequency band */
 	if (snr_a && snr_b && abs(snr_b - snr_a) < 7) {
 		if (wa->est_throughput != wb->est_throughput)
-			return wb->est_throughput - wa->est_throughput;
+			return (int) wb->est_throughput -
+				(int) wa->est_throughput;
 	}
 	if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) ||
 	    (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) {