diff --git a/src/Repository/MimeDbRepository.php b/src/Repository/MimeDbRepository.php
index a251750..ec9574e 100644
--- a/src/Repository/MimeDbRepository.php
+++ b/src/Repository/MimeDbRepository.php
@@ -16,6 +16,14 @@
  */
 class MimeDbRepository extends AbstractRepository
 {
+
+    /**
+     * minetype db file name
+     *
+     * @var string
+     */
+    protected $filename;
+
     /**
      * {@inheritdoc}
      */
@@ -51,4 +59,4 @@ function ($type) {
 
         $this->setFromMap(array_combine(array_keys($mimeDb), $mimeDbExtensions));
     }
-}
\ No newline at end of file
+}