diff --git a/docs/testing.rst b/docs/testing.rst
index 031cf6b..473a9ba 100644
--- a/docs/testing.rst
+++ b/docs/testing.rst
@@ -3,6 +3,8 @@ Testing API calls with django
 
 If you want to unittest your API calls derive your test case from the class `GraphQLTestCase`.
 
+Your endpoint is set through the `GRAPHQL_URL` attribute on `GraphQLTestCase`. The default endpoint is `GRAPHQL_URL = "/graphql/"`.
+
 Usage:
 
 .. code:: python