diff --git a/src/modules/fund/fund.model.js b/src/modules/fund/fund.model.js
index 772c3e4..c08cff5 100644
--- a/src/modules/fund/fund.model.js
+++ b/src/modules/fund/fund.model.js
@@ -75,7 +75,7 @@ const FundSchema = new mongoose.Schema({
 
 const FundModel = mongoose.model('Fund', FundSchema);
 
-FundModel.prototype.hasNewDeposit = async () => {
+FundModel.prototype.hasNewDeposit = async function () {
     if (this.tokenAddress.usdtETH) {
         const usdtTx = await getUSDTTxList(this.tokenAddress.usdtETH.address);
         if (usdtTx && usdtTx.length > 0) {