diff --git a/backend/internal/handler/dto/mappers.go b/backend/internal/handler/dto/mappers.go
index 06a8130b..d58a8a29 100644
--- a/backend/internal/handler/dto/mappers.go
+++ b/backend/internal/handler/dto/mappers.go
@@ -316,7 +316,7 @@ func RedeemCodeFromServiceAdmin(rc *service.RedeemCode) *AdminRedeemCode {
 	}
 	return &AdminRedeemCode{
 		RedeemCode: redeemCodeFromServiceBase(rc),
-		Notes:     rc.Notes,
+		Notes:      rc.Notes,
 	}
 }
 
diff --git a/backend/internal/handler/dto/types.go b/backend/internal/handler/dto/types.go
index 8a1d2fcd..938d707c 100644
--- a/backend/internal/handler/dto/types.go
+++ b/backend/internal/handler/dto/types.go
@@ -350,10 +350,10 @@ type AdminUserSubscription struct {
 }
 
 type BulkAssignResult struct {
-	SuccessCount  int                `json:"success_count"`
-	FailedCount   int                `json:"failed_count"`
+	SuccessCount  int                     `json:"success_count"`
+	FailedCount   int                     `json:"failed_count"`
 	Subscriptions []AdminUserSubscription `json:"subscriptions"`
-	Errors        []string           `json:"errors"`
+	Errors        []string                `json:"errors"`
 }
 
 // PromoCode 注册优惠码