diff --git a/src/StaticPHP/Package/PhpExtensionPackage.php b/src/StaticPHP/Package/PhpExtensionPackage.php
index 29dd2942..582216d7 100644
--- a/src/StaticPHP/Package/PhpExtensionPackage.php
+++ b/src/StaticPHP/Package/PhpExtensionPackage.php
@@ -157,7 +157,7 @@ class PhpExtensionPackage extends Package
 
     /**
      * Run smoke test for the extension on Unix CLI.
-     * Override this method in a subclass。
+     * Override this method in a subclass.
      */
     public function runSmokeTestCliUnix(): void
     {