diff --git a/ServerCommand.php b/ServerCommand.php
index 2c1a552..f0b0470 100644
--- a/ServerCommand.php
+++ b/ServerCommand.php
@@ -77,7 +77,7 @@ class ServerCommand extends Command
                 return 1;
             }
 		}
-        return $manager->start();
+        return (int)$manager->start();
 	}
 
 }