diff --git a/Documentation/bluetooth/card10.rst b/Documentation/bluetooth/card10.rst
index 7835048aca8190213614e52155518b8d18e7f3c3..08c8b4f6bf23afd49d7413da2a510745aa185735 100644
--- a/Documentation/bluetooth/card10.rst
+++ b/Documentation/bluetooth/card10.rst
@@ -1,5 +1,5 @@
 Bluetooth Card10 Service
-==========
+========================
 
 .. warning::
     The specification is still work in progress