diff --git a/src/shared/FileInfoCollection.php b/src/shared/FileInfoCollection.php
index 33a0f057..5e230072 100644
--- a/src/shared/FileInfoCollection.php
+++ b/src/shared/FileInfoCollection.php
@@ -64,7 +64,7 @@ public function rewind() {
          * @return int
          */
         public function count() {
-            return count($this->data);
+            return count((array) $this->data);
         }
 
     }