diff --git a/addons/sale/wizard/sale_make_invoice_advance.xml b/addons/sale/wizard/sale_make_invoice_advance.xml
index e0ad5605977..5fc8b993921 100644
--- a/addons/sale/wizard/sale_make_invoice_advance.xml
+++ b/addons/sale/wizard/sale_make_invoice_advance.xml
@@ -15,7 +15,7 @@
              	<separator string="" colspan="4"/>
              	<label string=""  colspan="2" />
               	<button special="cancel" string="Cancel" icon="gtk-cancel"/>
-               	<button name="createInvoices" string="Create Advance Invoice" type="object" icon="gtk-ok"/>
+               	<button name="create_invoices" string="Create Advance Invoice" type="object" icon="gtk-ok"/>
              </form>
             </field>
 		</record>