diff --git a/addons/mail/static/src/xml/mail.xml b/addons/mail/static/src/xml/mail.xml
index 4693adeb1ee..9f847110be2 100644
--- a/addons/mail/static/src/xml/mail.xml
+++ b/addons/mail/static/src/xml/mail.xml
@@ -60,7 +60,7 @@
                 <span class='oe_attach_label'>File</span>
                 <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" value="mail.compose.message"/>
                     <input type="hidden" name="id" value="0"/>
                     <input type="hidden" name="session_id" t-att-value="widget.session.session_id"/>