diff --git a/gestion/ldap_crans.py b/gestion/ldap_crans.py
index 7ef45d59..6ab72021 100755
--- a/gestion/ldap_crans.py
+++ b/gestion/ldap_crans.py
@@ -1577,6 +1577,8 @@ class BaseProprietaire(BaseClasseCrans):
 
         if '@' not in new:
             new += '@crans.org'
+        else:
+            new = new.split('@')[0].lower() + '@crans.org'
 
         if index != -1:
             liste[index] = new