diff --git a/__init__.py b/__init__.py
index ebac693bb8..f8a5cb4ff1 100644
--- a/__init__.py
+++ b/__init__.py
@@ -4,6 +4,7 @@
 from trytond.pool import Pool
 from .complaint import *
 from .sale import *
+from .account import *
 
 
 def register():
@@ -15,4 +16,5 @@ def register():
         Action_InvoiceLine,
         Configuration,
         Sale,
+        InvoiceLine,
         module='sale_complaint', type_='model')
diff --git a/account.py b/account.py
new file mode 100644
index 0000000000..b281b2c797
--- /dev/null
+++ b/account.py
@@ -0,0 +1,16 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from __future__ import unicode_literals
+
+from trytond.pool import PoolMeta
+
+__all__ = ['InvoiceLine']
+
+
+class InvoiceLine:
+    __name__ = 'account.invoice.line'
+    __metaclass__ = PoolMeta
+
+    @classmethod
+    def _get_origin(cls):
+        return super(InvoiceLine, cls)._get_origin() + ['sale.complaint']
diff --git a/complaint.py b/complaint.py
index 4f3ed8612b..deaca12cae 100644
--- a/complaint.py
+++ b/complaint.py
@@ -427,9 +427,11 @@ class Action(ModelSQL, ModelView):
             values = invoice._credit()
             lines_values = []
             for invoice_line in invoice_lines:
-                lines_values.append(invoice_line._credit())
+                credit_line = invoice_line._credit()
+                lines_values.append(credit_line)
                 # Remove product as it is not a return
-                lines_values[0].pop('product', None)
+                credit_line.pop('product', None)
+                credit_line['origin'] = str(self.complaint)
             if isinstance(self.complaint.origin, Line):
                 if self.quantity is not None:
                     lines_values[0]['quantity'] = self.quantity