diff --git a/py/doc/impl-test.txt b/py/doc/impl-test.txt
index 7807985df..87cd8b633 100644
--- a/py/doc/impl-test.txt
+++ b/py/doc/impl-test.txt
@@ -181,7 +181,7 @@ custom Collectors and Items if they are found
 in a local ``conftest.py`` file.  
 
 example: perform additional ReST checks 
-++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++
 
 With your custom collectors or items you can completely 
 derive from the standard way of collecting and running