diff --git a/package.json b/package.json
index 75029e9..842d76b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nervina-labs/ckb-dex",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "The JavaScript SDK for CKB DEX",
   "author": "duanyytop <duanyytop@gmail.com>",
   "license": "MIT",
diff --git a/src/order/maker.ts b/src/order/maker.ts
index 9628e22..80f4ce1 100644
--- a/src/order/maker.ts
+++ b/src/order/maker.ts
@@ -25,9 +25,9 @@ import { CKBTransaction } from '@joyid/ckb'
 import { OrderArgs } from './orderArgs'
 
 // The difference between the capacity occupied by the owner lock and the seller lock and the result may be negative
-export const calculateNFTMakerListPackage = (seller: string | CKBComponents.Script): bigint => {
+export const calculateNFTMakerListPackage = (seller: string | CKBComponents.Script, buyer?: CKBComponents.Script): bigint => {
   const sellerLock = typeof seller === 'string' ? addressToScript(seller) : seller
-  const sellerLockArgsSize = remove0x(sellerLock.args).length / 2
+  const buyerLockArgsSize = remove0x(buyer?.args ?? sellerLock.args).length / 2
 
   // The setup and totalValue are only used as a placeholder and does not affect the final size calculation.
   const setup = 4
@@ -35,7 +35,7 @@ export const calculateNFTMakerListPackage = (seller: string | CKBComponents.Scri
   const orderArgs = new OrderArgs(sellerLock, setup, totalValue)
   const orderArgsSize = remove0x(orderArgs.toHex()).length / 2
 
-  return BigInt(orderArgsSize - sellerLockArgsSize) * CKB_UNIT
+  return BigInt(orderArgsSize - buyerLockArgsSize) * CKB_UNIT
 }
 
 export const calculateUDTMakerListPackage = (seller: string | CKBComponents.Script, assetType?: Hex | CKBComponents.Script): bigint => {
diff --git a/src/order/taker.ts b/src/order/taker.ts
index 268217a..d9831dc 100644
--- a/src/order/taker.ts
+++ b/src/order/taker.ts
@@ -62,7 +62,7 @@ export const matchNftOrderCells = (orderCells: CKBComponents.LiveCell[], buyerLo
     dexOutputs.push(output)
     dexOutputsData.push('0x')
 
-    makerNetworkFee += calculateNFTMakerListPackage(orderArgs.ownerLock)
+    makerNetworkFee += calculateNFTMakerListPackage(orderArgs.ownerLock, buyerLock)
 
     const buyerNftCapacity = calculateNFTCellCapacity(buyerLock, orderCell)
     buyerOutputs.push({
@@ -176,6 +176,7 @@ export const buildTakerTx = async ({
     }
 
     changeCapacity = inputsCapacity + makerNetworkFee - dexOutputsCapacity - txFee
+
     const changeOutput: CKBComponents.CellOutput = {
       lock: buyerLock,
       capacity: append0x(changeCapacity.toString(16)),