diff --git a/src/Components/swoole/src/Context/CoroutineContextManager.php b/src/Components/swoole/src/Context/CoroutineContextManager.php
index ddb07a810..951532354 100644
--- a/src/Components/swoole/src/Context/CoroutineContextManager.php
+++ b/src/Components/swoole/src/Context/CoroutineContextManager.php
@@ -119,7 +119,7 @@ public function exists(string $flag): bool
     {
         if ($flag > -1)
         {
-            return Coroutine::exists($flag);
+            return Coroutine::exists((int) $flag);
         }
         else
         {