diff --git a/gestion/ldap_crans.py b/gestion/ldap_crans.py
index 52c6501e..cd4445d2 100644
--- a/gestion/ldap_crans.py
+++ b/gestion/ldap_crans.py
@@ -1748,7 +1748,7 @@ class BaseProprietaire(BaseClasseCrans):
         if 'chbre' in self.modifs and '????' in [ self._init_data.get("chbre", [''])[0] ,  self._init_data.get("chbre", [''])[0] ]:
             self.services_to_restart('bl_chbre_invalide')
 
-        if 'chbre' in self.modifs:
+        if 'chbre' in self.modifs and self._data['chbre'][0] not in ("????", "EXT"):
             while True:
                 bat = self._data['chbre'][0][0]
                 ch = self._data['chbre'][0][1:]