diff --git a/document_page_approval/document_page_approval.py b/document_page_approval/document_page_approval.py
index a4b13a46..1c5e640e 100644
--- a/document_page_approval/document_page_approval.py
+++ b/document_page_approval/document_page_approval.py
@@ -60,11 +60,11 @@ class document_page_history_wkfl(models.Model):
                 cr, SUPERUSER_ID, 'mail', 'mt_comment')[1]
             message_obj.create(
                 cr, uid, {
-                          'res_id': page_history.page_id.id,
-                          'model': 'document.page',
-                          'subtype_id': subtype_id,
-                          'body': _('New version of the document %s'
-                                    ' approved.') % page_history.page_id.name
+                    'res_id': page_history.page_id.id,
+                    'model': 'document.page',
+                    'subtype_id': subtype_id,
+                    'body': _('New version of the document %s'
+                              ' approved.') % page_history.page_id.name
                           })
         return True