diff --git a/addons/l10n_ch/report/isr_report.xml b/addons/l10n_ch/report/isr_report.xml
index 90b7cd1f50e..26d843789d8 100644
--- a/addons/l10n_ch/report/isr_report.xml
+++ b/addons/l10n_ch/report/isr_report.xml
@@ -153,6 +153,7 @@
         <template id="l10n_ch.isr_report_main">
             <t t-call="web.html_container">
                 <t t-foreach="docs" t-as="invoice">
+                    <t t-set="o" t-value="invoice"/>
                     <t t-call="l10n_ch.l10n_ch_isr_report_template"/>
                 </t>
             </t>