diff --git a/tests/roots/test-ext-inheritance_diagram/index.rst b/tests/roots/test-ext-inheritance_diagram/index.rst
index 8c6344cbe31..3d099cbe4c7 100644
--- a/tests/roots/test-ext-inheritance_diagram/index.rst
+++ b/tests/roots/test-ext-inheritance_diagram/index.rst
@@ -18,6 +18,3 @@ test-ext-inheritance_diagram
 .. inheritance-diagram:: subdir.other.Bob
 
 .. py:class:: test.Alice
-
-.. toctree::
-   subdir/index