diff --git a/params/config.go b/params/config.go
index 0ee9bd38c2..d58a92683d 100644
--- a/params/config.go
+++ b/params/config.go
@@ -18,6 +18,7 @@ package params
 
 import (
 	"fmt"
+	"math"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"