diff --git a/content/xmpp.rst b/content/xmpp.rst
index 547fe49..7383194 100644
--- a/content/xmpp.rst
+++ b/content/xmpp.rst
@@ -5,7 +5,7 @@ xmpp
 :date: 2026-10-03 11:00:00
 :modified: 2026-10-03 11:00:00
 :tags: chat instant-messaging communication
-:category: how_to
+:category: how-to
 :slug: xmpp
 :authors: Maxime
 :summary: Guide de configuration pour un débutant a XMPP