diff --git a/doc/src/user/en/14-custos.rst b/doc/src/user/en/14-custos.rst
index b3182b878..57a9aa382 100644
--- a/doc/src/user/en/14-custos.rst
+++ b/doc/src/user/en/14-custos.rst
@@ -1,5 +1,5 @@
 Cost management
-###############
+################
 
 .. _costes:
 .. contents::