diff --git a/docs/api-guide/serializers.md b/docs/api-guide/serializers.md
index 6602d5e2c..e157845a9 100644
--- a/docs/api-guide/serializers.md
+++ b/docs/api-guide/serializers.md
@@ -700,7 +700,7 @@ You can override a URL field view name and lookup field by using either, or both
             model = Account
             fields = ('account_url', 'account_name', 'users', 'created')
             extra_kwargs = {
-                'url': {'view_name': 'accounts', 'lookup_field': 'account_name'}
+                'url': {'view_name': 'accounts', 'lookup_field': 'account_name'},
                 'users': {'lookup_field': 'username'}
             }