diff --git a/core/state_transition.go b/core/state_transition.go
index e95c6a6f56..2809bbad60 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -23,6 +23,7 @@ import (
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
+	cmath "github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core/tracing"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"