diff --git a/lc_ldap.py b/lc_ldap.py
index e81f5db..940c981 100644
--- a/lc_ldap.py
+++ b/lc_ldap.py
@@ -576,8 +576,9 @@ class proprio(CransLdapObject):
             return bool_carte
         return True
         
-    def update_solde(self, diff, comment=u""):
+    def update_solde(self, diff, comment=u"", login=None):
         """Modifie le solde du proprio. diff peut être négatif ou positif."""
+        login = login or current_user
         assert isinstance(diff, int) or isinstance(diff, float)
         assert isinstance(comment, unicode)
         
@@ -590,7 +591,7 @@ class proprio(CransLdapObject):
         
         transaction = u"credit" if diff >=0 else u"debit"
         new_solde = u"%.2f" % new_solde
-        self.history_add(current_user, u"%s %.2f Euros [%s]" % (transaction, abs(diff), comment))
+        self.history_add(login, u"%s %.2f Euros [%s]" % (transaction, abs(diff), comment))
         self["solde"] = new_solde
 
     def machines(self):