diff --git a/contribute.md b/contribute.md
index f6df2ccf..a9dd05be 100644
--- a/contribute.md
+++ b/contribute.md
@@ -47,7 +47,7 @@ Our support relies on contributors like you. Just come to [the XMPP chatroom](/s
You can involve in the YunoHost's development regardless of your skill.
Sysadmins, web developers, designers and pythonists are welcome!
-A mailing-list is available.
+A [development chat room](xmpp:dev@conference.yunohost.org?join) and a mailing-list is available.
diff --git a/contribute_fr.md b/contribute_fr.md
index e6d867ea..b2d05134 100644
--- a/contribute_fr.md
+++ b/contribute_fr.md
@@ -80,7 +80,7 @@ Améliorez cette documentation en [proposant de nouvelles pages](/write_document