diff --git a/Controller/ReportController.php b/Controller/ReportController.php
index 546549d39..a01e005ee 100644
--- a/Controller/ReportController.php
+++ b/Controller/ReportController.php
@@ -176,7 +176,7 @@ class ReportController extends Controller
             'cf_group' => $cFGroup
         ));
 
-        $response->headers->set('Content-Type', 'text/csv');
+        $response->headers->set('Content-Type', 'text/csv; charset=utf-8');
         $response->headers->set('Content-Disposition', 'attachment; filename="export.csv"');
         return $response;
     }