diff --git a/addons/account_payment/views/account_portal_templates.xml b/addons/account_payment/views/account_portal_templates.xml
index bdc9c9da488..997791176a4 100644
--- a/addons/account_payment/views/account_portal_templates.xml
+++ b/addons/account_payment/views/account_portal_templates.xml
@@ -38,7 +38,7 @@
     <template id="portal_invoice_payment" name="Invoice Payment">
         <div class="row" t-if="not tx_ids and invoice.state == 'open' and invoice.amount_total" id="portal_pay">
             <div class="modal fade" id="pay_with" role="dialog">
-                <div class="modal-dialog modal-content">
+                <div class="modal-dialog">
                     <div class="modal-content">
                         <div class="modal-header">
                             <h3 class="modal-title">Pay with</h3>