diff --git a/addons/website_event/models/event.py b/addons/website_event/models/event.py
index 640eb9a3121..8fab469c5c8 100644
--- a/addons/website_event/models/event.py
+++ b/addons/website_event/models/event.py
@@ -57,7 +57,14 @@ class Event(models.Model):
         if self.event_type_id:
             self.website_menu = self.event_type_id.website_menu
 
+    def _get_standard_menu_entries_names(self):
+        """ Method returning menu entries possibly generated by event modules.
+        It is used to distinguish module-generated pages from custom pages. """
+        return [_('Introduction'), _('Location'), _('Register')]
+
     def _get_menu_entries(self):
+        """ Method returning menu entries to display on the website view of the
+        event, possibly depending on some options in inheriting modules. """
         self.ensure_one()
         return [
             (_('Introduction'), False, 'website_event.template_intro'),
@@ -75,9 +82,17 @@ class Event(models.Model):
                     root_menu = self.env['website.menu'].create({'name': event.name})
                     event.menu_id = root_menu
 
+                existing_page_names = event.menu_id.child_id.mapped('name')
+                required_page_names = [entry[0] for entry in self._get_menu_entries()]
+                standard_page_names = self._get_standard_menu_entries_names()
+
+                # remove entries that should not exist anymore
+                submenu_to_delete = event.menu_id.child_id.filtered(lambda menu: menu.name not in required_page_names and menu.name in standard_page_names)
+                submenu_to_delete.unlink()
+
+                # create missing entries
                 for sequence, (name, url, xml_id) in enumerate(self._get_menu_entries()):
-                    existing_pages = event.menu_id.child_id.mapped('name')
-                    if name not in existing_pages:
+                    if name not in existing_page_names:
                         if not url:
                             newpath = self.env['website'].new_page(name + ' ' + self.name, xml_id, ispage=False)
                             url = "/event/" + slug(self) + "/page/" + newpath
diff --git a/addons/website_event_track/models/event.py b/addons/website_event_track/models/event.py
index 3acd8e8279f..adee21feb42 100644
--- a/addons/website_event_track/models/event.py
+++ b/addons/website_event_track/models/event.py
@@ -80,6 +80,11 @@ class Event(models.Model):
             self.website_track = False
             self.website_track_proposal = False
 
+    def _get_standard_menu_entries_names(self):
+        res = super(Event, self)._get_standard_menu_entries_names()
+        res += [_('Talks'), _('Agenda'), _('Talk Proposals')]
+        return res
+
     def _get_menu_entries(self):
         self.ensure_one()
         res = super(Event, self)._get_menu_entries()