diff --git a/src/Events/Select.php b/src/Events/Select.php
index 385135a2..4b3dba72 100644
--- a/src/Events/Select.php
+++ b/src/Events/Select.php
@@ -357,7 +357,8 @@ protected function setNextTickTime(float $nextTickTime): void
     {
         $this->nextTickTime = $nextTickTime;
         if ($nextTickTime == 0) {
-            // Set a shorter timeout so that swow can timely detect the signal.
+            // Swow will affect the signal interruption characteristics of stream_select,
+            // so a shorter timeout should be used to detect signals.
             $this->selectTimeout = 800000;
             return;
         }