diff --git a/CHANGELOG b/CHANGELOG
index 9b4edc16c8..0cba1ae892 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Remove window_name on Action Window
 * Return the calling keyword in ActionKeyword.get_keywords
 * Add customizable login process
 * Allow to customize the substitutions used on sequence
diff --git a/trytond/ir/action.py b/trytond/ir/action.py
index 275fde50a5..9bfb28272c 100644
--- a/trytond/ir/action.py
+++ b/trytond/ir/action.py
@@ -688,8 +688,6 @@ class ActionActWindow(ActionMixin, ModelSQL, ModelView):
             help='Default limit for the list view')
     action = fields.Many2One('ir.action', 'Action', required=True,
             ondelete='CASCADE')
-    window_name = fields.Boolean('Window Name',
-            help='Use the action name as window name')
     search_value = fields.Char('Search Criteria',
             help='Default search criteria for the list view')
     pyson_domain = fields.Function(fields.Char('PySON Domain'), 'get_pyson')
@@ -731,6 +729,9 @@ class ActionActWindow(ActionMixin, ModelSQL, ModelView):
         # Migration from 3.0: auto_refresh removed
         table.drop_column('auto_refresh')
 
+        # Migration from 4.0: window_name removed
+        table.drop_column('window_name')
+
     @staticmethod
     def default_type():
         return 'ir.action.act_window'
@@ -743,10 +744,6 @@ class ActionActWindow(ActionMixin, ModelSQL, ModelView):
     def default_limit():
         return 0
 
-    @staticmethod
-    def default_window_name():
-        return True
-
     @staticmethod
     def default_search_value():
         return '[]'
diff --git a/trytond/ir/view/action_act_window_form.xml b/trytond/ir/view/action_act_window_form.xml
index 36d112d78f..2a5a33e4cb 100644
--- a/trytond/ir/view/action_act_window_form.xml
+++ b/trytond/ir/view/action_act_window_form.xml
@@ -30,8 +30,6 @@ this repository contains the full copyright notices and license terms. -->
             <field name="search_value" colspan="3"/>
             <label name="limit"/>
             <field name="limit"/>
-            <label name="window_name"/>
-            <field name="window_name"/>
         </page>
         <page name="keywords">
             <field name="keywords" colspan="4"/>