diff --git a/app/services/pieces_justificatives_service.rb b/app/services/pieces_justificatives_service.rb
index 63e2cb76d..c70ace4dc 100644
--- a/app/services/pieces_justificatives_service.rb
+++ b/app/services/pieces_justificatives_service.rb
@@ -57,7 +57,7 @@ class PiecesJustificativesService
     property :created_at
 
     def download
-      file
+      file.read
     end
 
     def read(*args)