diff --git a/sonoff/_changelog.ino b/sonoff/_changelog.ino
index 9c1c9d92b..2c8210483 100644
--- a/sonoff/_changelog.ino
+++ b/sonoff/_changelog.ino
@@ -1,7 +1,8 @@
 /*********************************************************************************************\
  * 6.6.0.4 20190806
  * Add support for CHIRP soil moisture sensor by Christian Baars
- * Add debug compile features using defines DEBUG_TASMOTA_DRIVER and DEBUG_TASMOTA_SENSOR. See example in xdrv_09_timers.ino
+ * Add debug compile features using defines DEBUG_TASMOTA_CORE, DEBUG_TASMOTA_DRIVER and DEBUG_TASMOTA_SENSOR.
+ *   See DEBUG_CORE_LOG example in sonoff.ino and DEBUG_DRIVER_LOG example in xdrv_09_timers.ino
  *
  * 6.6.0.3 20190725
  * Change filename of configuration backup from using FriendlyName1 to Hostname solving diacritic issues (#2422)
diff --git a/sonoff/xdrv_09_timers.ino b/sonoff/xdrv_09_timers.ino
index 90a61c250..7be4dc459 100644
--- a/sonoff/xdrv_09_timers.ino
+++ b/sonoff/xdrv_09_timers.ino
@@ -285,11 +285,11 @@ void TimerEverySecond(void)
           set_time += timer_window[i];                            // Add random time offset
           if (set_time < 0) { set_time = abs(timer_window[i]); }  // After midnight and within negative window so stay today but allow positive randomness;
           if (set_time > 1439) { set_time = 1439; }               // Stay today
-
+#ifdef DEBUG_TASMOTA_DRIVER
           if (0 == i) {
-            DEBUG_DRIVER_LOG(PSTR("TIM: Timer 1 XTimerTime %d, Window %d, SetTime %d"), xtimer.time, timer_window[i], set_time);
+            DEBUG_DRIVER_LOG(PSTR("TIM: Timer 1, Time %d, Window %d, SetTime %d"), xtimer.time, timer_window[i], set_time);
           }
-
+#endif
           if (time == set_time) {
             if (xtimer.days & days) {
               Settings.timer[i].arm = xtimer.repeat;