1 files changed, 3 insertions, 0 deletions
diff --git a/addons/mail/static/src/js/models/messages/abstract_message.js b/addons/mail/static/src/js/models/messages/abstract_message.js
index 6a7b02d6e94..ee9374996d4 100644
--- a/addons/mail/static/src/js/models/messages/abstract_message.js
+++ b/addons/mail/static/src/js/models/messages/abstract_message.js
@@ -48,6 +48,9 @@ var AbstractMessage =  Class.extend({
         this._type = data.message_type || undefined;
 
         this._processAttachmentURL();
+        this._attachmentIDs.forEach(function (attachment) {
+            attachment.filename = attachment.filename || attachment.name || _t("unnamed");
+        });
     },
 
     //--------------------------------------------------------------------------