diff --git a/openslides/agenda/models.py b/openslides/agenda/models.py
index a8bfb6b94..459b50547 100644
--- a/openslides/agenda/models.py
+++ b/openslides/agenda/models.py
@@ -128,9 +128,9 @@ class Item(SlideMixin, AbsoluteUrlMixin, MPTTModel):
         Ensures that the children of orga items are only orga items.
         """
         if self.type == self.AGENDA_ITEM and self.parent is not None and self.parent.type == self.ORGANIZATIONAL_ITEM:
-            raise ValidationError(_('Agenda items can not be descendents of an organizational item.'))
+            raise ValidationError(_('Agenda items can not be child elements of an organizational item.'))
         if self.type == self.ORGANIZATIONAL_ITEM and self.get_descendants().filter(type=self.AGENDA_ITEM).exists():
-            raise ValidationError(_('Organizational items can not have agenda items as descendents.'))
+            raise ValidationError(_('Organizational items can not have agenda items as child elements.'))
         return super(Item, self).clean()
 
     def __unicode__(self):
diff --git a/openslides/agenda/views.py b/openslides/agenda/views.py
index 140838981..4af70752a 100644
--- a/openslides/agenda/views.py
+++ b/openslides/agenda/views.py
@@ -139,7 +139,7 @@ class Overview(TemplateView):
                     if item.type == item.AGENDA_ITEM and parent.type == item.ORGANIZATIONAL_ITEM:
                         transaction.rollback()
                         messages.error(
-                            request, _('Agenda items can not be descendents of an organizational item.'))
+                            request, _('Agenda items can not be child elements of an organizational item.'))
                         break
                 item.parent = parent
                 item.weight = form.cleaned_data['weight']
diff --git a/tests/agenda/tests.py b/tests/agenda/tests.py
index cec6a6351..f67eeda6f 100644
--- a/tests/agenda/tests.py
+++ b/tests/agenda/tests.py
@@ -241,7 +241,7 @@ class ViewTest(TestCase):
             'i2-parent': 1}
         response = self.adminClient.post('/agenda/', data)
         self.assertNotEqual(Item.objects.get(pk=2).parent_id, 1)
-        self.assertContains(response, 'Agenda items can not be descendents of an organizational item.')
+        self.assertContains(response, 'Agenda items can not be child elements of an organizational item.')
 
     def test_delete(self):
         response = self.adminClient.get('/agenda/%s/del/' % self.item1.pk)
@@ -301,7 +301,7 @@ class ViewTest(TestCase):
             response,
             'form',
             None,
-            'Agenda items can not be descendents of an organizational item.')
+            'Agenda items can not be child elements of an organizational item.')
 
     def test_orga_item_with_orga_parent_two(self):
         item1 = Item.objects.create(title='item1_aeNg4Heibee8ULooneep')
@@ -314,7 +314,7 @@ class ViewTest(TestCase):
             response,
             'form',
             None,
-            'Organizational items can not have agenda items as descendents.')
+            'Organizational items can not have agenda items as child elements.')
 
     def test_csv_import(self):
         item_number = Item.objects.all().count()