diff --git a/document_page/models/document_page.py b/document_page/models/document_page.py
index 9423a635..1c58ce72 100644
--- a/document_page/models/document_page.py
+++ b/document_page/models/document_page.py
@@ -37,9 +37,7 @@ class DocumentPage(models.Model):
         'Children'
     )
 
-    content = fields.Text(
-        "Content"
-    )
+    content = fields.Text("Content")
 
     display_content = fields.Text(
         string='Displayed Content',
@@ -60,26 +58,23 @@ class DocumentPage(models.Model):
 
     create_date = fields.Datetime(
         "Created on",
-        index=True,
         readonly=True
     )
 
     create_uid = fields.Many2one(
         'res.users',
         'Author',
-        index=True,
         readonly=True
     )
 
     write_date = fields.Datetime(
         "Modification Date",
-        index=True,
-        readonly=True)
+        readonly=True
+    )
 
     write_uid = fields.Many2one(
         'res.users',
         "Last Contributor",
-        index=True,
         readonly=True
     )
 
diff --git a/document_page/models/document_page_history.py b/document_page/models/document_page_history.py
index 21dbe397..4124a9f8 100644
--- a/document_page/models/document_page_history.py
+++ b/document_page/models/document_page_history.py
@@ -5,6 +5,7 @@
 import logging
 import difflib
 from odoo import fields, models
+from odoo.tools.translate import _
 
 _logger = logging.getLogger(__name__)
 
diff --git a/document_page/wizard/document_page_show_diff.py b/document_page/wizard/document_page_show_diff.py
index a0753f90..0ebf4df8 100644
--- a/document_page/wizard/document_page_show_diff.py
+++ b/document_page/wizard/document_page_show_diff.py
@@ -2,8 +2,8 @@
 # Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import fields, models
-from odoo import exceptions
+from odoo import exceptions, fields, models
+from odoo.tools.translate import _
 
 
 class DocumentPageShowDiff(models.TransientModel):