diff --git a/triedb/pathdb/lookup.go b/triedb/pathdb/lookup.go
index fee2573a35..37d90c4ce3 100644
--- a/triedb/pathdb/lookup.go
+++ b/triedb/pathdb/lookup.go
@@ -335,7 +335,6 @@ func (l *lookup) addStorageNodes(state common.Hash, nodes map[common.Hash]map[st
 
 	var (
 		wg    sync.WaitGroup
-		locks [storageNodesShardCount]sync.Mutex
 		tasks = make([][]shardTask, storageNodesShardCount)
 	)
 
@@ -361,9 +360,6 @@ func (l *lookup) addStorageNodes(state common.Hash, nodes map[common.Hash]map[st
 				return
 			}
 
-			locks[shardIdx].Lock()
-			defer locks[shardIdx].Unlock()
-
 			shard := l.storageNodes[shardIdx]
 			for _, task := range taskList {
 				key := makeTrienodeKey(task.accountHash, task.path)
@@ -477,7 +473,6 @@ func (l *lookup) removeStorageNodes(state common.Hash, nodes map[common.Hash]map
 
 	var (
 		eg    errgroup.Group
-		locks [storageNodesShardCount]sync.Mutex
 		tasks = make([][]shardTask, storageNodesShardCount)
 	)
 
@@ -501,9 +496,6 @@ func (l *lookup) removeStorageNodes(state common.Hash, nodes map[common.Hash]map
 				return nil
 			}
 
-			locks[shardIdx].Lock()
-			defer locks[shardIdx].Unlock()
-
 			shard := l.storageNodes[shardIdx]
 			for _, task := range taskList {
 				key := makeTrienodeKey(task.accountHash, task.path)