diff --git a/openerp/osv/fields.py b/openerp/osv/fields.py
index c856ac4e28c..190453d477a 100644
--- a/openerp/osv/fields.py
+++ b/openerp/osv/fields.py
@@ -601,7 +601,7 @@ class one2many(_column):
         domain = self._domain(obj) if callable(self._domain) else self._domain
         model = obj.pool[self._obj]
         ids2 = model.search(cr, user, domain + [(self._fields_id, 'in', ids)], limit=self._limit, context=context)
-        if len(ids)<>1:
+        if len(ids) != 1:
             for r in model._read_flat(cr, user, ids2, [self._fields_id], context=context, load='_classic_write'):
                 if r[self._fields_id] in res:
                     res[r[self._fields_id]].append(r['id'])