diff --git a/core/compatibility.go b/core/compatibility.go
index 4070dcc55..40e4609cb 100644
--- a/core/compatibility.go
+++ b/core/compatibility.go
@@ -307,6 +307,7 @@ func SetCompatibilityOptions(chainID uint32) {
 		NewNvmExeTimeoutConsumeGasHeight = LocalNewNvmExeTimeoutConsumeGasHeight
 	}
 
+	// sort V8JSLibVersionHeightSlice in descending order by height
 	sort.Sort(sort.Reverse(V8JSLibVersionHeightSlice))
 
 	logging.VLog().WithFields(logrus.Fields{
@@ -465,8 +466,9 @@ func init() {
 	}
 }
 
-// GetV8JSLibVersion ..
-func GetV8JSLibVersion(blockHeight uint64) string {
+// GetMaxV8JSLibVersionAtHeight ..
+func GetMaxV8JSLibVersionAtHeight(blockHeight uint64) string {
+	// V8JSLibVersionHeightSlice is already sorted at SetCompatibilityOptions func
 	for _, v := range V8JSLibVersionHeightSlice {
 		if blockHeight >= v.height {
 			return v.version
diff --git a/core/transaction_deploy_payload.go b/core/transaction_deploy_payload.go
index 81e59f2b4..52f7fd88a 100644
--- a/core/transaction_deploy_payload.go
+++ b/core/transaction_deploy_payload.go
@@ -114,7 +114,7 @@ func (payload *DeployPayload) Execute(limitedGas *util.Uint128, tx *Transaction,
 		return util.NewUint128(), "", err
 	} */
 	var contract state.Account
-	v := GetV8JSLibVersion(block.Height())
+	v := GetMaxV8JSLibVersionAtHeight(block.Height())
 	if len(v) > 0 {
 		contract, err = ws.CreateContractAccount(addr.Bytes(), tx.Hash(), &corepb.ContractMeta{Version: v})
 	} else {