diff --git a/account_credit_control/wizard/credit_control_printer_view.xml b/account_credit_control/wizard/credit_control_printer_view.xml
index 64b4c249c..68b67aa31 100644
--- a/account_credit_control/wizard/credit_control_printer_view.xml
+++ b/account_credit_control/wizard/credit_control_printer_view.xml
@@ -30,8 +30,8 @@
           <field name="state" invisible="1" />
           <newline/>
           <footer>
-            <button class="oe_highlight" name="print_lines" string="Print" type="object"  attrs="{'invisible': [('state', '==', 'done')]}"/>
-            <button special="cancel" string="Cancel" icon='gtk-cancel' attrs="{'invisible': [('state', '==', 'done')]}"/>
+            <button class="oe_highlight" name="print_lines" string="Print" type="object"  attrs="{'invisible': [('state', '=', 'done')]}"/>
+            <button special="cancel" string="Cancel" icon='gtk-cancel' attrs="{'invisible': [('state', '=', 'done')]}"/>
             <button special="cancel" string="Close" icon='gtk-close' attrs="{'invisible': [('state', '!=', 'done')]}"/>
           </footer>
         </form>