diff --git a/sale.py b/sale.py
index 1f0480d2b1..e6b7ab28cf 100644
--- a/sale.py
+++ b/sale.py
@@ -10,7 +10,7 @@ from trytond.modules.company import CompanyReport
 from trytond.wizard import Wizard, StateAction, StateView, StateTransition, \
     Button
 from trytond.backend import TableHandler
-from trytond.pyson import If, Eval, Bool, PYSONEncoder
+from trytond.pyson import If, Eval, Bool, PYSONEncoder, Id
 from trytond.transaction import Transaction
 from trytond.pool import Pool
 from trytond.config import CONFIG
@@ -202,6 +202,18 @@ class Sale(Workflow, ModelSQL, ModelView):
                 'process': {
                     'invisible': Eval('state') != 'confirmed',
                     },
+                'handle_invoice_exception': {
+                    'invisible': ((Eval('invoice_state') != 'exception')
+                        | (Eval('state') == 'cancel')),
+                    'readonly': ~Eval('groups', []).contains(
+                        Id('sale', 'group_sale')),
+                    },
+                'handle_shipment_exception': {
+                    'invisible': ((Eval('shipment_state') != 'exception')
+                        | (Eval('state') == 'cancel')),
+                    'readonly': ~Eval('groups', []).contains(
+                        Id('sale', 'group_sale')),
+                    },
                 })
         # The states where amounts are cached
         self._states_cached = ['confirmed', 'processing', 'done', 'cancel']
@@ -910,6 +922,14 @@ class Sale(Workflow, ModelSQL, ModelView):
         self.set_sale_date(ids)
         self.store_cache(ids)
 
+    @ModelView.button_action('sale.wizard_invoice_handle_exception')
+    def handle_invoice_exception(self, ids):
+        pass
+
+    @ModelView.button_action('sale.wizard_shipment_handle_exception')
+    def handle_shipment_exception(self, ids):
+        pass
+
     @ModelView.button
     @Workflow.transition('processing')
     def process(self, ids):
diff --git a/sale.xml b/sale.xml
index 6c9cdbbe12..3aec2783fb 100644
--- a/sale.xml
+++ b/sale.xml
@@ -89,24 +89,20 @@ this repository contains the full copyright notices and license terms. -->
                                 <label name="total_amount" xalign="1.0" xexpand="1"/>
                                 <field name="total_amount" xalign="1.0" xexpand="0"/>
                                 <group col="7" colspan="2" id="buttons">
-                                    <button name="cancel" type="object" string="Cancel"
+                                    <button name="cancel" string="Cancel"
                                         icon="tryton-cancel"/>
-                                    <button name="draft" type="object" string="Draft"/>
-                                    <button name="quote" type="object" string="Quote"
+                                    <button name="draft" string="Draft"/>
+                                    <button name="quote" string="Quote"
                                         icon="tryton-go-next"/>
-                                    <button name="%(wizard_invoice_handle_exception)d"
-                                            string="Handle Invoice Exception"
-                                            type="action"
-                                            states="{'invisible': Or(Not(Equal(Eval('invoice_state'), 'exception')), Equal(Eval('state'), 'cancel')), 'readonly': Not(In(%(group_sale)d, Eval('groups', [])))}"
-                                            icon="tryton-go-next"/>
-                                    <button name="%(wizard_shipment_handle_exception)d"
-                                            type="action"
-                                            string="Handle Shipment Exception"
-                                            states="{'invisible': Or(Not(Equal(Eval('shipment_state'), 'exception')), Equal(Eval('state'), 'cancel')), 'readonly': Not(In(%(group_sale)d, Eval('groups', [])))}"
-                                            icon="tryton-go-next"/>
-                                    <button name="confirm" type="object" string="Confirm"
+                                    <button name="handle_invoice_exception"
+                                        string="Handle Invoice Exception"
                                         icon="tryton-go-next"/>
-                                    <button name="process" type="object" string="Process"
+                                    <button name="handle_shipment_exception"
+                                        string="Handle Shipment Exception"
+                                        icon="tryton-go-next"/>
+                                    <button name="confirm" string="Confirm"
+                                        icon="tryton-go-next"/>
+                                    <button name="process" string="Process"
                                         icon="tryton-go-next"/>
                                 </group>
                             </group>