diff --git a/common/components/artboximage/ArtboxImageHelper.php b/common/components/artboximage/ArtboxImageHelper.php
index 536a001..a73199f 100755
--- a/common/components/artboximage/ArtboxImageHelper.php
+++ b/common/components/artboximage/ArtboxImageHelper.php
@@ -13,7 +13,7 @@ class ArtboxImageHelper extends Object {
     private static $imageDriver;
     private static $presets;
 
-    public function getDriver() {
+    public static function getDriver() {
         if (empty(self::$imageDriver)) {
             self::$imageDriver = Yii::$app->artboximage;
         }
--
libgit2 0.21.4