diff --git a/l10n_br_fiscal/views/document_view.xml b/l10n_br_fiscal/views/document_view.xml
index be3940c92a19..9a4e9823c81f 100644
--- a/l10n_br_fiscal/views/document_view.xml
+++ b/l10n_br_fiscal/views/document_view.xml
@@ -177,7 +177,7 @@
                             'default_document_id': active_id,
                             'default_currency_id': currency_id,
                             'default_company_id': company_id,
-                            }">
+                            }" readonly="1">
                       <tree string="Duplicatas" editable="bottom">
                           <field name="document_id" invisible="1"/>
                           <field name="currency_id" invisible="1"/>