diff --git a/src/modules/users/services/users.service.ts b/src/modules/users/services/users.service.ts
index 8aa6d7d..ffd1e2f 100644
--- a/src/modules/users/services/users.service.ts
+++ b/src/modules/users/services/users.service.ts
@@ -92,7 +92,7 @@ export class UsersService {
     try {
       const mailServerUser = await firstValueFrom(
         this.mailServerService.users.createUser({
-          username: `${username}-${business.name}`,
+          username: `${username}-${domain.name}`,
           password,
           address: emailAddress,
           name: displayName || username,