diff --git a/libs/common/src/tools/generator/username/email-forwarders/fastmail-forwarder.ts b/libs/common/src/tools/generator/username/email-forwarders/fastmail-forwarder.ts
index 3a0fa122e86..e8ea19afc95 100644
--- a/libs/common/src/tools/generator/username/email-forwarders/fastmail-forwarder.ts
+++ b/libs/common/src/tools/generator/username/email-forwarders/fastmail-forwarder.ts
@@ -35,7 +35,7 @@ export class FastmailForwarder implements Forwarder {
               "new-masked-email": {
                 state: "enabled",
                 description: "",
-                url: options.website,
+                forDomain: options.website,
                 emailPrefix: options.fastmail.prefix,
               },
             },