diff --git a/addons/sale/test/cancel_order.yml b/addons/sale/test/cancel_order.yml
index cde3a5b34f2..d9d76f19935 100644
--- a/addons/sale/test/cancel_order.yml
+++ b/addons/sale/test/cancel_order.yml
@@ -51,11 +51,8 @@
   I cancel all the invoices.
 -
   !python {model: sale.order}: |
-    import netsvc
     invoice_ids = self.browse(cr, uid, ref("sale_order_8")).invoice_ids
-    wf_service = netsvc.LocalService("workflow")
-    for invoice in invoice_ids:
-        wf_service.trg_validate(uid, 'account.invoice', invoice.id, 'invoice_cancel', cr)
+    self.pool.get('account.invoice').signal_invoice_cancel(cr, uid, invoice_ids)
 -
   I check order status in "Invoice Exception" and related invoice is in cancel state.
 -
diff --git a/addons/sale/test/manual_order_policy.yml b/addons/sale/test/manual_order_policy.yml
index 5fe29950176..905f04b01f5 100644
--- a/addons/sale/test/manual_order_policy.yml
+++ b/addons/sale/test/manual_order_policy.yml
@@ -41,11 +41,8 @@
   I open the Invoice.
 -
   !python {model: sale.order}: |
-    import netsvc
-    wf_service = netsvc.LocalService("workflow")
     so = self.browse(cr, uid, ref("sale_order_2"))
-    for invoice in so.invoice_ids:
-      wf_service.trg_validate(uid, 'account.invoice', invoice.id, 'invoice_open', cr)
+    self.pool.get('account.invoice').signal_invoice_open(cr, uid, so.invoice_ids)
 -
   I pay the invoice.
 -