diff --git a/packages/backend/server/src/core/auth/controller.ts b/packages/backend/server/src/core/auth/controller.ts
index 5601ad4e2..b24414863 100644
--- a/packages/backend/server/src/core/auth/controller.ts
+++ b/packages/backend/server/src/core/auth/controller.ts
@@ -186,7 +186,7 @@ export class AuthController {
           throw new InvalidEmail({ email });
         }
         // filter out alias emails
-        if (name.includes('+') || name.includes('.')) {
+        if (name.includes('+')) {
           throw new InvalidEmail({ email });
         }
       }