diff --git a/blockpool/peers.go b/blockpool/peers.go
index 1ace01fdf7..80168b206c 100644
--- a/blockpool/peers.go
+++ b/blockpool/peers.go
@@ -7,6 +7,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/errs"
 )
@@ -471,6 +472,7 @@ func (self *peer) getBlockHashes() {
 				}
 			}
 			headKey := self.parentHash.Str()
+			height := self.bp.status.chain[headKey] + 1
 			self.bp.status.chain[self.currentBlockHash.Str()] = height
 			if height > self.bp.status.values.LongestChain {
 				self.bp.status.values.LongestChain = height
diff --git a/blockpool/peers_test.go b/blockpool/peers_test.go
index 0e4c40e87c..beeb0ad1db 100644
--- a/blockpool/peers_test.go
+++ b/blockpool/peers_test.go
@@ -170,8 +170,8 @@ func TestPeerPromotionByOptionalTdOnBlock(t *testing.T) {
 	hashes := blockPoolTester.hashPool.IndexesToHashes([]int{2, 3})
 	peer1.waitBlocksRequests(3)
 	blockPool.AddBlock(&types.Block{
-		HeaderHash:       common.Bytes(hashes[1]),
-		ParentHeaderHash: common.Bytes(hashes[0]),
+		HeaderHash:       common.Hash(hashes[1]),
+		ParentHeaderHash: common.Hash(hashes[0]),
 		Td:               common.Big3,
 	}, "peer1")
 
diff --git a/blockpool/section.go b/blockpool/section.go
index 0304c9a04b..18a27377dd 100644
--- a/blockpool/section.go
+++ b/blockpool/section.go
@@ -117,7 +117,7 @@ func (self *section) addSectionToBlockChain(p *peer) {
 				break
 			}
 			self.poolRootIndex--
-			keys = append(keys, node.hash.Str())
+			keys = append(keys, n.hash.Str())
 			blocks = append(blocks, block)
 			nodes = append(nodes, n)
 		}