diff --git a/Abstracts/TraitServer.php b/Abstracts/TraitServer.php
index 526960a..33a5dc7 100644
--- a/Abstracts/TraitServer.php
+++ b/Abstracts/TraitServer.php
@@ -109,7 +109,7 @@ trait TraitServer
      */
     private function onPcntlSignal($signal, $callback): void
     {
-        pcntl_signal($signal, $callback);
+        \pcntl_signal($signal, $callback);
     }
 
 
diff --git a/HotReload.php b/HotReload.php
index 8b71897..e632642 100644
--- a/HotReload.php
+++ b/HotReload.php
@@ -63,7 +63,7 @@ class HotReload extends BaseProcess
         if (Context::inCoroutine()) {
             Coroutine::create(fn() => $this->onShutdown(Coroutine::waitSignal(SIGTERM | SIGINT)));
         } else {
-            pcntl_signal(SIGTERM, [$this, 'onStop']);
+            \pcntl_signal(SIGTERM, [$this, 'onStop']);
         }
         return $this;
     }