diff --git a/framework/core/src/Extend/Frontend.php b/framework/core/src/Extend/Frontend.php
index f1680d2aa..5a2cb1ad4 100644
--- a/framework/core/src/Extend/Frontend.php
+++ b/framework/core/src/Extend/Frontend.php
@@ -12,6 +12,7 @@ namespace Flarum\Extend;
 use Flarum\Extension\Event\Disabled;
 use Flarum\Extension\Event\Enabled;
 use Flarum\Extension\Extension;
+use Flarum\Foundation\ContainerUtil;
 use Flarum\Foundation\Event\ClearingCache;
 use Flarum\Frontend\Assets;
 use Flarum\Frontend\Compiler\Source\SourceCollector;