diff --git a/dicos/70_lemonldap_ng.xml b/dicos/70_lemonldap_ng.xml
index f243ffb..49e614d 100644
--- a/dicos/70_lemonldap_ng.xml
+++ b/dicos/70_lemonldap_ng.xml
@@ -99,6 +99,12 @@
             <variable name='llChangePassword' type='oui/non' description="Permettre aux utilisateurs de changer leurs mots de passe depuis LemonLDAP">
                 <value>oui</value>
             </variable>
+            <variable name='llADPasswordMaxAge' type='number' description="Durée de vie des mots de passe (en secondes)" mode='expert'>
+                <value>5184000</value>
+            </variable>
+            <variable name='llADPasswordExpireWarn' type='number' description="Délai avant affichage d'un message d'alerte sur l'expiration du mot de passe (en secondes)">
+                <value>3456000</value>
+            </variable>
             <variable name='llResetExpiredPassword' type='oui/non' description="Autoriser le renouvellement des mots de passe expirés">
                 <value>oui</value>
             </variable>
@@ -158,6 +164,12 @@
             <slave>casLDAPAttribute</slave>
         </group>
 
+        <condition name='enabled_if_in' source='lemon_user_db'>
+            <param>AD</param>
+            <target type='variable'>llADPasswordMaxAge</target>
+            <target type='variable'>llADPasswordExpireWarn</target>
+        </condition>
+
         <condition name='disabled_if_in' source='activerLemon'>
             <param>non</param>
             <target type='filelist'>lemonldap</target>
diff --git a/tmpl/lmConf-1.json b/tmpl/lmConf-1.json
index b136925..a794cd1 100644
--- a/tmpl/lmConf-1.json
+++ b/tmpl/lmConf-1.json
@@ -13,8 +13,10 @@
 %silent %%exported_vars.sort()
 %silent %%cas_attributes.sort()
 {
-    "ADPwdExpireWarning": 0,
-    "ADPwdMaxAge": 0,
+%if %%lemon_user_db == "AD"
+    "ADPwdExpireWarning": %%llADPasswordExpireWarn,
+    "ADPwdMaxAge": %%llADPasswordMaxAge,
+%end if
     "CAS_authnLevel": 1,
     "CAS_pgtFile": "/tmp/pgt.txt",
     "CAS_proxiedServices": {},