diff --git a/invoice.py b/invoice.py
index 0290ec9..b67e20f 100644
--- a/invoice.py
+++ b/invoice.py
@@ -36,5 +36,5 @@ class InvoiceLine(metaclass=PoolMeta):
         if not self.taxes:
             raise UserError(gettext(
                 'account_invoice_taxes_required.tax_required',
-                    line=self.rec_name,
-                    invoice=(self.invoice.rec_name if self.invoice else '')))
+                    line=self.rec_name.split(' @ ')[0],
+                    invoice=(self.invoice.id if self.invoice else '')))
diff --git a/locale/ca.po b/locale/ca.po
index e2ef23d..c357abf 100644
--- a/locale/ca.po
+++ b/locale/ca.po
@@ -3,5 +3,5 @@ msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
 msgctxt "model:ir.message,text:tax_required"
-msgid "Missing tax in line \"%(line)s\" in invoice \"%(invoice)s\"."
-msgstr "Falta l'impost a la linia \"%(line)s\" de la factura \"%(invoice)s\"."
+msgid "Missing tax in line \"%(line)s\" in invoice ID \"%(invoice)s\"."
+msgstr "Falta l'impost a la linia \"%(line)s\" de la factura ID \"%(invoice)s\"."
diff --git a/locale/es.po b/locale/es.po
index 6a8f0c5..ebe2241 100644
--- a/locale/es.po
+++ b/locale/es.po
@@ -3,5 +3,5 @@ msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
 msgctxt "model:ir.message,text:tax_required"
-msgid "Missing tax in line \"%(line)s\" in invoice \"%(invoice)s\"."
-msgstr "Falta el impuesto a la línea \"%(line)s\" de la factura \"%(invoice)s\"."
+msgid "Missing tax in line \"%(line)s\" in invoice ID \"%(invoice)s\"."
+msgstr "Falta el impuesto a la línea \"%(line)s\" de la factura ID \"%(invoice)s\"."
diff --git a/messages.xml b/messages.xml
index 1ea94b4..b7b4512 100644
--- a/messages.xml
+++ b/messages.xml
@@ -4,7 +4,7 @@ this repository contains the full copyright notices and license terms. -->
 <tryton>
     <data grouped="1">
       <record model="ir.message" id="tax_required">
-          <field name="text">Missing tax in line "%(line)s" in invoice "%(invoice)s".</field>
+          <field name="text">Missing tax in line "%(line)s" in invoice ID "%(invoice)s".</field>
       </record>
     </data>
 </tryton>
diff --git a/tests/scenario_invoice_taxes_required.rst b/tests/scenario_invoice_taxes_required.rst
index e80435d..87fca3a 100644
--- a/tests/scenario_invoice_taxes_required.rst
+++ b/tests/scenario_invoice_taxes_required.rst
@@ -112,7 +112,7 @@ Create invoice Without Taxes::
     >>> invoice.click('post')  # doctest: +IGNORE_EXCEPTION_DETAIL
     Traceback (most recent call last):
         ...
-    UserError: ('UserError', ('Missing tax in line "Test" in invoice "1".', ''))
+    UserError: ('UserError', ('Missing tax in line "Test" in invoice ID "1".', ''))
     >>> invoice.reload()
     >>> invoice.state
     'draft'