diff --git a/blockmanager.go b/blockmanager.go
index ff3e1418..91521d2b 100644
--- a/blockmanager.go
+++ b/blockmanager.go
@@ -94,7 +94,7 @@ func (b *blockManager) startSync(peers *list.List) {
 	if bestPeer != nil {
 		locator, err := b.blockChain.LatestBlockLocator()
 		if err != nil {
-			log.Error("[BMGR] Failed to get block locator for the "+
+			log.Errorf("[BMGR] Failed to get block locator for the "+
 				"latest block: %v", err)
 			return
 		}
@@ -269,12 +269,13 @@ out:
 // connected to and disconnected from the main chain.
 func (b *blockManager) handleNotifyMsg(notification *btcchain.Notification) {
 	switch notification.Type {
+	// An orphan block has been accepted by the block chain.
 	case btcchain.NTOrphanBlock:
 		orphanRoot := notification.Data.(*btcwire.ShaHash)
 		if peer, exists := b.blockPeer[*orphanRoot]; exists {
 			locator, err := b.blockChain.LatestBlockLocator()
 			if err != nil {
-				log.Error("[BMGR] Failed to get block locator "+
+				log.Errorf("[BMGR] Failed to get block locator "+
 					"for the latest block: %v", err)
 				break
 			}
diff --git a/peer.go b/peer.go
index faabbed6..5d0863c7 100644
--- a/peer.go
+++ b/peer.go
@@ -352,7 +352,7 @@ func (p *peer) handleInvMsg(msg *btcwire.MsgInv) {
 				orphanRoot := chain.GetOrphanRoot(&iv.Hash)
 				locator, err := chain.LatestBlockLocator()
 				if err != nil {
-					log.Error("[PEER] Failed to get block "+
+					log.Errorf("[PEER] Failed to get block "+
 						"locator for the latest block: "+
 						"%v", err)
 					continue