diff --git a/group_vars/constellation-front.yml b/group_vars/constellation_front.yml
similarity index 100%
rename from group_vars/constellation-front.yml
rename to group_vars/constellation_front.yml
diff --git a/hosts b/hosts
index 89a58973adfb40fc642b8291cce1784efb4f5d8d..83884c9389131fb83dc93389bee2ee3d0e322022 100644
--- a/hosts
+++ b/hosts
@@ -46,9 +46,9 @@ thelounge
 vsftpd
 
 [constellation:children]
-constellation-front
+constellation_front
 
-[constellation-front]
+[constellation_front]
 constellation-dev.adm.crans.org
 
 [dhcp:children]
@@ -108,7 +108,7 @@ horde.adm.crans.org
 irc.adm.crans.org
 
 [jitsi]
-jitsi.adm.crans.org
+_itsi.adm.crans.org
 
 [keepalived]
 routeur-daniel.adm.crans.org
@@ -142,7 +142,7 @@ eclat.adm.crans.org
 ptf.adm.crans.org
 
 [nginx:children]
-constellation-front
+constellation_front
 django_cas
 galene
 jitsi
diff --git a/plays/constellation.yml b/plays/constellation.yml
index a2cd33e0272c5cfc10059859bd3180e6ff634576..f323dd6e9fec07002fff1b8dcd797291c783939f 100755
--- a/plays/constellation.yml
+++ b/plays/constellation.yml
@@ -6,7 +6,7 @@
   roles:
     - constellation
 
-- hosts: constellation-front
+- hosts: constellation_front
   vars:
     constellation: "{{ glob_constellation | combine(loc_constellation | default({}), recursive=True) }}"
     nginx: '{{ glob_nginx | default({}) | combine(service_nginx | default({}) | combine(loc_nginx | default({}))) }}'