diff --git a/services.py b/services.py
index 19561cc..52d361c 100644
--- a/services.py
+++ b/services.py
@@ -180,8 +180,8 @@ def service_to_restart(conn, new=None, args=[], start=0):
 
 def services_to_restart(conn, old_attrs={}, new_attrs={}):
         """Détermine quels sont les services à reconfigurer"""
-        old_attrs_c = dict((attributs.CRANS_ATTRIBUTES[key], value) for key,value in old_attrs.items())
-        new_attrs_c = dict((attributs.CRANS_ATTRIBUTES[key], value) for key,value in new_attrs.items())
+        old_attrs_c = dict((attributs.CRANS_ATTRIBUTES[key], value) for key,value in old_attrs.items() if key in attributs.CRANS_ATTRIBUTES.keys() and value)
+        new_attrs_c = dict((attributs.CRANS_ATTRIBUTES[key], value) for key,value in new_attrs.items() if key in attributs.CRANS_ATTRIBUTES.keys() and value)
 
         created_attr = [ attr for name in new_attrs_c.keys() if not name in old_attrs_c.keys() for attr in new_attrs_c[name]]
         deleted_attr = [ attr for name in old_attrs_c.keys() if not name in new_attrs_c.keys() for attr in old_attrs_c[name]]