diff --git a/README b/README
index a249b02..a86f8a3 100644
--- a/README
+++ b/README
@@ -238,14 +238,14 @@ MELLON_CREATE_GROUP
 Whether to create group or only assign existing groups, default is True.
 
 MELLON_ERROR_URL
-================
+----------------
 
 URL for the continue link when authentication fails, default is
 None. If not ERROR_URL is None, the RelayState is used. If there is
 no RelayState, the LOGIN_REDIRECT_URL, which defaults to /, is used.
 
 MELLON_ERROR_REDIRECT_AFTER_TIMEOUT
-===================================
+-----------------------------------
 
 Timeout in seconds before automatically redirecting the user to the
 continue URL when authentication has failed. Default is 120 seconds.