diff --git a/dicos/71_lemonldap_ng_scribe.xml b/dicos/71_lemonldap_ng_scribe.xml
index 29240ea..5b98165 100644
--- a/dicos/71_lemonldap_ng_scribe.xml
+++ b/dicos/71_lemonldap_ng_scribe.xml
@@ -6,7 +6,7 @@
     <variables>
 
         <family name='eole sso'>
-            <variable name='eolesso_adresse' description="Nom de domaine du serveur d'authentification SSO" redefine="True" />
+            <variable name='eolesso_adresse' type='domain_strict' description="Nom de domaine du serveur d'authentification SSO" redefine="True" exists='True' />
         </family>
 
     </variables>