diff --git a/blockchain/chain.go b/blockchain/chain.go
index 71c1b2ee..a2397ca5 100644
--- a/blockchain/chain.go
+++ b/blockchain/chain.go
@@ -722,7 +722,7 @@ func (b *BlockChain) disconnectBlock(node *blockNode, block *btcutil.Block, view
 
 	err = b.db.Update(func(dbTx database.Tx) error {
 		// Update best block state.
-		err := dbPutBestState(dbTx, state, node.workSum)
+		err := dbPutBestState(dbTx, state, node.parent.workSum)
 		if err != nil {
 			return err
 		}