diff --git a/doc/config.rst b/doc/config.rst
index a0151dda3..e35ca6965 100644
--- a/doc/config.rst
+++ b/doc/config.rst
@@ -149,7 +149,7 @@ General configuration
    file that is read.  This is the right place to add substitutions that should
    be available in every file.  An example::
 
-      rest_preamble = """
+      rst_epilog = """
       .. |psf| replace:: Python Software Foundation
       """