diff --git a/core/extension.php b/core/extension.php
index 8cbd09ec..80f1ad5c 100644
--- a/core/extension.php
+++ b/core/extension.php
@@ -107,7 +107,8 @@ abstract class Extension
     }
 }
 
-enum ExtensionVisibility {
+enum ExtensionVisibility
+{
     case DEFAULT;
     case ADMIN;
     case HIDDEN;