diff --git a/addons/l10n_ch/data/account_tax_report_data.xml b/addons/l10n_ch/data/account_tax_report_data.xml
index dc4d95644f7..313f46fbb9d 100644
--- a/addons/l10n_ch/data/account_tax_report_data.xml
+++ b/addons/l10n_ch/data/account_tax_report_data.xml
@@ -9,6 +9,7 @@
     <record id="account_tax_report_line_chiffre_af" model="account.tax.report.line">
         <field name="name">I - CHIFFRE D'AFFAIRES</field>
         <field name="report_id" ref="tax_report"/>
+        <field name="formula">None</field>
         <field name="sequence" eval="1"/>
     </record>
 
@@ -86,6 +87,7 @@
     <record id="account_tax_report_line_calc_impot" model="account.tax.report.line">
         <field name="name">II - CALCUL DE L'IMPOT</field>
         <field name="report_id" ref="tax_report"/>
+        <field name="formula">None</field>
         <field name="sequence" eval="3"/>
     </record>