diff --git a/app/Helper/Image.php b/app/Helper/Image.php
index 65bc5e1..18f8585 100644
--- a/app/Helper/Image.php
+++ b/app/Helper/Image.php
@@ -74,7 +74,7 @@ class  Image {
         return $file;
     }
 
-    public function getRawImage(\App\Models\Image $image, boolean $cache = null): File {
+    public function getRawImage(\App\Models\Image $image, bool $cache = null): File {
         $cacheName = $this->getCachePath($image, null);
         if(Storage::disk("cache")->exists($cacheName)) {
             Log::info("Get RAW-Image File from cache", ["image_id" => $image->id]);