diff --git a/src/pretix/static/pretixbase/js/addressform.js b/src/pretix/static/pretixbase/js/addressform.js
index bf5f723c39..3a5b35ad39 100644
--- a/src/pretix/static/pretixbase/js/addressform.js
+++ b/src/pretix/static/pretixbase/js/addressform.js
@@ -174,7 +174,7 @@ $(function () {
                 const fill_peppol_id = function () {
                     const vatId = dependents.vat_id.val();
                     if (vatId && vatId.startsWith("BE") && dependents.transmission_type.val() === "peppol") {
-                        dependents.transmission_peppol_participant_id.val("0208:" + vatId.substring(2))
+                        dependents.transmission_peppol_participant_id.val("0208:" + vatId.substring(2).replaceAll(".", ""))
                     }
                 }
                 dependents.vat_id.add(dependents.transmission_type).on("change", fill_peppol_id);