diff --git a/preservice/30-one-auth b/preservice/30-one-auth
index 5c54019..9722a18 100644
--- a/preservice/30-one-auth
+++ b/preservice/30-one-auth
@@ -10,6 +10,8 @@ else
 fi
 
 # creation de la base /var/lib/one/one.db
-systemctl daemon-reload
-systemctl start opennebula.service
+if [ ! -e /var/lib/one/one.db ]; then
+    systemctl daemon-reload
+    systemctl start opennebula.service
+fi
 exit 0