diff --git a/core/vm/instructions.go b/core/vm/instructions.go
index c720cf7ff1..21a7ea3953 100644
--- a/core/vm/instructions.go
+++ b/core/vm/instructions.go
@@ -17,6 +17,8 @@
 package vm
 
 import (
+	"math"
+
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
@@ -304,7 +306,7 @@ func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext
 	)
 	dataOffset64, overflow := dataOffset.Uint64WithOverflow()
 	if overflow {
-		dataOffset64 = 0xffffffffffffffff
+		dataOffset64 = math.MaxUint64
 	}
 	// These values are checked for overflow during gas cost calculation
 	memOffset64 := memOffset.Uint64()
@@ -362,7 +364,7 @@ func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([
 	)
 	uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
 	if overflow {
-		uint64CodeOffset = 0xffffffffffffffff
+		uint64CodeOffset = math.MaxUint64
 	}
 	codeCopy := getData(scope.Contract.Code, uint64CodeOffset, length.Uint64())
 	scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
@@ -380,7 +382,7 @@ func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext)
 	)
 	uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
 	if overflow {
-		uint64CodeOffset = 0xffffffffffffffff
+		uint64CodeOffset = math.MaxUint64
 	}
 	addr := common.Address(a.Bytes20())
 	codeCopy := getData(interpreter.evm.StateDB.GetCode(addr), uint64CodeOffset, length.Uint64())