diff --git a/gestion/trigger/services/dhcp.py b/gestion/trigger/services/dhcp.py
index 9b154a18..cd832cb7 100644
--- a/gestion/trigger/services/dhcp.py
+++ b/gestion/trigger/services/dhcp.py
@@ -69,6 +69,8 @@ class Dhcp(BasicService):
         """Regenerates dhcp service taking body into account.
 
         """
+        cls.check_params()
+
         # http://satyajit.ranjeev.in/2012/01/12/python--dangerous-default-value-as-argument.html
         # dict are referenced.
         if body is None: