diff --git a/django/contrib/admin/options.py b/django/contrib/admin/options.py
index ec32c89..0989600 100644
--- a/django/contrib/admin/options.py
+++ b/django/contrib/admin/options.py
@@ -246,11 +246,11 @@ class ModelAdmin(BaseModelAdmin):
         # Delegate to the appropriate method, based on the URL.
         if url is None:
             return self.changelist_view(request)
-        elif url.endswith('add'):
+        elif url == 'add':
             return self.add_view(request)
-        elif url.endswith('history'):
+        elif url.endswith('/history'):
             return self.history_view(request, unquote(url[:-8]))
-        elif url.endswith('delete'):
+        elif url.endswith('/delete'):
             return self.delete_view(request, unquote(url[:-7]))
         else:
             return self.change_view(request, unquote(url))