diff --git a/docs/topics/db/models.txt b/docs/topics/db/models.txt
index 55d4ace0a9..a28e7e8805 100644
--- a/docs/topics/db/models.txt
+++ b/docs/topics/db/models.txt
@@ -1101,7 +1101,7 @@ manager <custom-managers-and-inheritance>` documentation: create a base class
 containing the new managers and inherit that after the primary base class::
 
     # Create an abstract class for the new manager.
-    class ExtraManagers:
+    class ExtraManagers(models.Model):
         secondary = NewManager()
 
         class Meta: