diff --git a/tryton/gui/window/view_form/model/field.py b/tryton/gui/window/view_form/model/field.py
index c5f242db1b..9bef1ae04a 100644
--- a/tryton/gui/window/view_form/model/field.py
+++ b/tryton/gui/window/view_form/model/field.py
@@ -342,7 +342,6 @@ class M2OField(CharField):
             else:
                 value = None
         if not rec_name and value >= 0:
-            int(value)
             args = ('model', self.attrs['relation'], 'read', value,
                     ['rec_name'], rpc.CONTEXT)
             try: