diff --git a/libs/auth/src/common/abstractions/login-success-handler.service.ts b/libs/auth/src/common/abstractions/login-success-handler.service.ts
index 479e2dfa9cb..e6d75d661f5 100644
--- a/libs/auth/src/common/abstractions/login-success-handler.service.ts
+++ b/libs/auth/src/common/abstractions/login-success-handler.service.ts
@@ -5,7 +5,7 @@ export abstract class LoginSuccessHandlerService {
    * Runs any service calls required after a successful login.
    * Service calls that should be included in this method are only those required to be awaited after successful login.
    * @param userId The user id.
-   * @param masterPassword
+   * @param masterPassword The master password, if available. Null when logging in with SSO or other non-master-password methods.
    */
   abstract run(userId: UserId, masterPassword: string | null): Promise<void>;
 }