diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index c9adc91a6ad..04af9e6722d 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -650,7 +650,7 @@
                     <li t-if="section.name == 'files'" class="oe_sidebar_add_attachment">
                         <t t-call="HiddenInputFile">
                             <t t-set="fileupload_id" t-value="widget.fileupload_id"/>
-                            <t t-set="fileupload_action">/web/binary/upload_attachment</t>
+                            <t t-set="fileupload_action" t-translation="off">/web/binary/upload_attachment</t>
                             <input type="hidden" name="model" t-att-value="widget.dataset and widget.dataset.model"/>
                             <input type="hidden" name="id" t-att-value="widget.model_id"/>
                             <input type="hidden" name="session_id" t-att-value="widget.session.session_id"/>