diff --git a/contrib/wpa/src/drivers/driver_bsd.c b/contrib/wpa/src/drivers/driver_bsd.c
index f99122e477c1..96cf066a7a46 100644
--- a/contrib/wpa/src/drivers/driver_bsd.c
+++ b/contrib/wpa/src/drivers/driver_bsd.c
@@ -648,7 +648,7 @@ rtbuf_len(void)
 		len = 2048;
 	}
 
-	return len;
+	return (len == 0) ? 2048 : len;
 }
 
 #ifdef HOSTAPD