diff --git a/openerp/addons/base/ir/ir_actions.py b/openerp/addons/base/ir/ir_actions.py
index 21ad57f5d03..623fb54b49f 100644
--- a/openerp/addons/base/ir/ir_actions.py
+++ b/openerp/addons/base/ir/ir_actions.py
@@ -1130,6 +1130,8 @@ class ir_actions_act_client(osv.osv):
 
     def _get_params(self, cr, uid, ids, field_name, arg, context):
         result = {}
+        # Need to remove bin_size from context, to obtains the binary and not the length.
+        context = dict(context, bin_size_params_store=False)
         for record in self.browse(cr, uid, ids, context=context):
             result[record.id] = record.params_store and eval(record.params_store, {'uid': uid}) or False
         return result