diff --git a/sonoff/support_rtc.ino b/sonoff/support_rtc.ino
index 62f11bd2c..102266eae 100644
--- a/sonoff/support_rtc.ino
+++ b/sonoff/support_rtc.ino
@@ -360,7 +360,7 @@ void RtcSecond(void)
   if (!user_time_entry) {
     if ((ntp_sync_minute > 59) && (RtcTime.minute > 2)) ntp_sync_minute = 1;                 // If sync prepare for a new cycle
     uint8_t offset = (uptime < 30) ? RtcTime.second : (((ESP.getChipId() & 0xF) * 3) + 3) ;  // First try ASAP to sync. If fails try once every 60 seconds based on chip id
-    if (!global_state.wifi_down && (offset == RtcTime.second) && ((RtcTime.year < 2016) || (ntp_sync_minute == RtcTime.minute) || ntp_force_sync)) {
+    if (!global_state.wifi_down && (((offset == RtcTime.second) && ((RtcTime.year < 2016) || (ntp_sync_minute == RtcTime.minute))) || ntp_force_sync)) {
       ntp_time = sntp_get_current_timestamp();
       if (ntp_time > 1451602800) {  // Fix NTP bug in core 2.4.1/SDK 2.2.1 (returns Thu Jan 01 08:00:10 1970 after power on)
         ntp_force_sync = false;