diff --git a/gestion/trigger/services/dhcp.py b/gestion/trigger/services/dhcp.py
index 3cec2516..9b154a18 100644
--- a/gestion/trigger/services/dhcp.py
+++ b/gestion/trigger/services/dhcp.py
@@ -7,25 +7,25 @@
 # Author : Pierre-Elliott Bécue <becue@crans.org>
 # Licence : GPLv3
 
-import lc_ldap.shortcuts
-import gestion.config.trigger as trigger_config
-from gestion.trigger.services.service import BasicService
-from cranslib.conffile import ConfFile
-import cranslib.clogger as clogger
-import gestion.config.dhcp as dhcp_config
-import gestion.secrets_new as secrets_new
 import socket
-import gestion.affichage as affichage
 import os
-import gestion.iptools as iptools
-
-from gestion.trigger.pypureomapi import pack_ip, pack_mac, OMAPI_OP_UPDATE
-from gestion.trigger.pypureomapi import Omapi, OmapiMessage
 import struct
 
+import gestion.config.trigger as trigger_config
+import cranslib.clogger as clogger
 logger = clogger.CLogger("trigger", "dhcp", "debug", trigger_config.debug)
+
 hostname = socket.gethostname().split(".")[0] + ".adm.crans.org"
-ldap_conn = lc_ldap.shortcuts.lc_ldap_readonly()
+
+import lc_ldap.shortcuts
+from gestion.trigger.services.service import BasicService
+from cranslib.conffile import ConfFile
+import gestion.config.dhcp as dhcp_config
+import gestion.secrets_new as secrets_new
+import gestion.affichage as affichage
+import gestion.iptools as iptools
+from gestion.trigger.pypureomapi import pack_ip, pack_mac, OMAPI_OP_UPDATE
+from gestion.trigger.pypureomapi import Omapi, OmapiMessage
 
 
 class Dhcp(BasicService):
@@ -40,7 +40,8 @@ class Dhcp(BasicService):
     }
 
     dhcp_omapi_keyname = None
-    dhcp_omapi_key = None #secrets_new.get("dhcp_omapi_keys")[hostname]
+    dhcp_omapi_key = None
+    ldap_conn = None
 
     @classmethod
     def send_mac_ip(cls, body, diff):
@@ -91,7 +92,7 @@ class Dhcp(BasicService):
         }
     """
             affichage.prettyDoin("Chargement des machines", "...")
-            machines = ldap_conn.allMachines()
+            machines = cls.ldap_conn.allMachines()
             affichage.prettyDoin("Chargement des machines", "Ok")
             animation = affichage.Animation(texte="Génération de la configuration",
                                             nb_cycles=len(machines),
@@ -137,7 +138,7 @@ class Dhcp(BasicService):
                 raise
 
     @classmethod
-    def check_secrets(cls):
+    def check_params(cls):
         """This method allows lazy evaluation for dhcp_omapi_keyname
         and dhcp_omapi_key, since event imports all services. This is actually
         the best lazy eval we can hope, since property won't work on
@@ -148,13 +149,15 @@ class Dhcp(BasicService):
             cls.dhcp_omapi_keyname = secrets_new.get("dhcp_omapi_keyname")
         if cls.dhcp_omapi_key is None:
             cls.dhcp_omapi_key = secrets_new.get("dhcp_omapi_keys")[hostname]
+        if cls.ldap_conn is None:
+            cls.ldap_conn = lc_ldap.shortcuts.lc_ldap_readonly()
 
     @classmethod
     def add_dhcp_host(cls, mac, ip, name=None):
         """Adds a dhcp host using omapi
 
         """
-        cls.check_secrets()
+        cls.check_params()
 
         if '<automatique>' in [ip, mac]:
             return
@@ -175,7 +178,7 @@ class Dhcp(BasicService):
         """Deletes dhcp host using omapi
 
         """
-        cls.check_secrets()
+        cls.check_params()
 
         if '<automatique>' in [ip, mac]:
             return
diff --git a/gestion/trigger/services/event.py b/gestion/trigger/services/event.py
index e8f985dc..47b00404 100644
--- a/gestion/trigger/services/event.py
+++ b/gestion/trigger/services/event.py
@@ -133,7 +133,7 @@ def compare_lists(list1, list2):
 
     return moins, plus
 
-class event(BasicService):
+class Event(BasicService):
     """Event service class. It extends BasicService, but should not implement
     any change trigger, since it's this service which is designed to call
     change triggers of other services.
diff --git a/gestion/trigger/services/firewall.py b/gestion/trigger/services/firewall.py
index 83ff0981..203e2adb 100644
--- a/gestion/trigger/services/firewall.py
+++ b/gestion/trigger/services/firewall.py
@@ -14,14 +14,15 @@ is not designed to replace it, just to call specific functions from
 it to regenerate what needs to.
 """
 
+import cranslib.clogger as clogger
+logger = clogger.CLogger("trigger", "firewall", "debug", trigger_config.debug)
+
 import lc_ldap.shortcuts
+
 import gestion.config.trigger as trigger_config
 from gestion.trigger.services.service import BasicService
-import cranslib.clogger as clogger
 import gestion.trigger.firewall4.firewall4 as firewall4
 
-logger = clogger.CLogger("trigger", "firewall", "debug", trigger_config.debug)
-
 class Firewall(BasicService):
     """Firewall service that handles any modification in the firewall.