diff --git a/objets.py b/objets.py
index 331d46a..ba99152 100644
--- a/objets.py
+++ b/objets.py
@@ -965,12 +965,16 @@ class proprio(CransLdapObject):
     def get_mail(self):
         """Renvoie un mail de contact valide, or None"""
         mails = ( self.get('canonicalAlias', []) or \
-                  self.get('mail', []))
+                  self.get('mail', []) or \
+                  self.get('uid', []))
         if not mails or \
            any(b['type'] == 'mail_invalide' and b['fin'] == '-'
               for b in self.get('blacklist', []) ):
            return None
-        return mails[0].value
+        mail = mails[0].value
+        if '@' not in mail:
+            mail += '@crans.org'
+        return mail
 
 
 class machine(CransLdapObject):