Switched to new trie

1 files changed, 4 insertions, 4 deletions

diff --git a/core/types/derive_sha.go b/core/types/derive_sha.go
index 1897ff198..0beb19670 100644
--- a/core/types/derive_sha.go
+++ b/core/types/derive_sha.go
@@ -2,7 +2,7 @@ package types
 
 import (
 	"github.com/ethereum/go-ethereum/ethutil"
-	"github.com/ethereum/go-ethereum/trie"
+	"github.com/ethereum/go-ethereum/ptrie"
 )
 
 type DerivableList interface {
@@ -11,10 +11,10 @@ type DerivableList interface {
 }
 
 func DeriveSha(list DerivableList) []byte {
-	trie := trie.New(ethutil.Config.Db, "")
+	trie := ptrie.New(nil, ethutil.Config.Db)
 	for i := 0; i < list.Len(); i++ {
-		trie.Update(string(ethutil.NewValue(i).Encode()), string(list.GetRlp(i)))
+		trie.Update(ethutil.Encode(i), list.GetRlp(i))
 	}
 
-	return trie.GetRoot()
+	return trie.Root()
 }