diff --git a/model/subscription.go b/model/subscription.go
index 1e50c3b0..52a3a381 100644
--- a/model/subscription.go
+++ b/model/subscription.go
@@ -163,7 +163,7 @@ type SubscriptionPlan struct {
 	AllowBalancePay *bool `json:"allow_balance_pay"`
 
 	// Allow falling back to wallet balance after subscription quota is exhausted (empty = true)
-	AllowWalletOverflow *bool `json:"allow_wallet_overflow" gorm:"default:true"`
+	AllowWalletOverflow *bool `json:"allow_wallet_overflow"`
 
 	StripePriceId         string `json:"stripe_price_id" gorm:"type:varchar(128);default:''"`
 	CreemProductId        string `json:"creem_product_id" gorm:"type:varchar(128);default:''"`
@@ -274,7 +274,7 @@ type UserSubscription struct {
 	DowngradeGroup string `json:"downgrade_group" gorm:"type:varchar(64);default:''"`
 
 	// Whether wallet fallback is allowed after this subscription's quota is exhausted (snapshot from plan)
-	AllowWalletOverflow bool `json:"allow_wallet_overflow" gorm:"default:true"`
+	AllowWalletOverflow bool `json:"allow_wallet_overflow"`
 
 	CreatedAt int64 `json:"created_at" gorm:"bigint"`
 	UpdatedAt int64 `json:"updated_at" gorm:"bigint"`