diff --git a/zh_ac_dimmer.c b/zh_ac_dimmer.c
index 596a48e..028dbd9 100755
--- a/zh_ac_dimmer.c
+++ b/zh_ac_dimmer.c
@@ -182,10 +182,6 @@ static esp_err_t _zh_ac_dimmer_timer_init(void)
 
 static void IRAM_ATTR _zh_ac_dimmer_isr_handler(void *arg)
 {
-    // if (_is_dimmer_work == false)
-    // {
-    //     return;
-    // }
     uint64_t _current_us = esp_timer_get_time();
     if (_current_us - _prev_us <= (1250 * 0.9)) // 90% of zero crossing period (1250 µs) at 400 Hz.
     {