diff --git a/BUILDING.rst b/BUILDING.rst
index 4cd97e7..fd96c31 100644
--- a/BUILDING.rst
+++ b/BUILDING.rst
@@ -258,7 +258,7 @@ Execute ``ninja`` again any time you modify the code, test scripts, or CMake scr
 .. _Run tests:
 
 Run tests
-^^^^^^^^^
+---------
 
 Use `pytest`_ to execute unit tests: