diff --git a/classes/Process_ExportRequest.php b/classes/Process_ExportRequest.php
index 8bfa4fa..f402363 100644
--- a/classes/Process_ExportRequest.php
+++ b/classes/Process_ExportRequest.php
@@ -412,7 +412,7 @@ class Process_ExportRequest {
 
         foreach ($exportfiles as $files) {
 
-            $filename = $files['exportjob_file_path'];
+            $filename = (string) $files['exportjob_file_path'];
 
             unlink($filename);
         }