diff --git a/CodemirrorAsset.php b/CodemirrorAsset.php
index c18921a..04fe360 100644
--- a/CodemirrorAsset.php
+++ b/CodemirrorAsset.php
@@ -7,6 +7,7 @@
 namespace conquer\codemirror;
 
 use yii\web\View;
+use yii\helpers\ArrayHelper;
 
 /**
  * @author Andrey Borodulin
@@ -450,4 +451,4 @@ public function registerAssetFiles($view)
 		parent::registerAssetFiles($view);
 	}
 	
-}
\ No newline at end of file
+}