diff --git a/docs/config.rst b/docs/config.rst
index dac2c12..e0aa983 100644
--- a/docs/config.rst
+++ b/docs/config.rst
@@ -643,7 +643,7 @@ are referencing the previously defined list, not one of the built-in
 rendermodes.
 
 Built-in Rendermodes
---------------------
+====================
 The built-in rendermodes are nothing but pre-defined lists of rendermode
 primitives for your convenience. Here are their definitions::