diff --git a/addons/website_portal/controllers/main.py b/addons/website_portal/controllers/main.py
index 117e0f7dba7..e5bf6b12ef1 100644
--- a/addons/website_portal/controllers/main.py
+++ b/addons/website_portal/controllers/main.py
@@ -105,6 +105,8 @@ class website_account(http.Controller):
 
         # vat validation
         if data.get("vat") and hasattr(request.env["res.partner"], "check_vat"):
+            if data.get("country_id"):
+                data["vat"] = request.env["res.partner"].fix_eu_vat_number(int(data.get("country_id")), data.get("vat"))
             if request.website.company_id.sudo().vat_check_vies:
                 # force full VIES online check
                 check_func = request.env["res.partner"].vies_vat_check