diff --git a/System/Process/SProcess.php b/System/Process/SProcess.php
index e7a11f6d..b7d1252b 100644
--- a/System/Process/SProcess.php
+++ b/System/Process/SProcess.php
@@ -8,6 +8,9 @@ interface SProcess
 {
 
 
-	public function onHandler(\Swoole\Process $process);
+	/**
+	 * @param \Swoole\Process $process
+	 */
+	public function onHandler(\Swoole\Process $process): void;
 
 }
diff --git a/System/Process/ServerInotify.php b/System/Process/ServerInotify.php
index 2c12073b..39587bb2 100644
--- a/System/Process/ServerInotify.php
+++ b/System/Process/ServerInotify.php
@@ -36,7 +36,7 @@ class ServerInotify extends Process
 	 * @param \Swoole\Process $process
 	 * @throws Exception
 	 */
-	public function onHandler(\Swoole\Process $process)
+	public function onHandler(\Swoole\Process $process): void
 	{
 		set_error_handler([$this, 'onErrorHandler']);
 		$this->dirs = Config::get('inotify', false, [APP_PATH]);