diff --git a/watchtower/lookout/lookout.go b/watchtower/lookout/lookout.go
index 6cda3c3d..1f6d0fb4 100644
--- a/watchtower/lookout/lookout.go
+++ b/watchtower/lookout/lookout.go
@@ -134,7 +134,7 @@ func (l *Lookout) watchBlocks(epochs *chainntnfs.BlockEpochEvent) {
 			// that we are monitoring on behalf of our clients.
 			err = l.processEpoch(epoch, block)
 			if err != nil {
-				log.Errorf("Unable to process %s: %v",
+				log.Errorf("Unable to process %v: %v",
 					epoch, err)
 			}
 
diff --git a/watchtower/lookout/punisher.go b/watchtower/lookout/punisher.go
index f695ef6e..57a6e3a1 100644
--- a/watchtower/lookout/punisher.go
+++ b/watchtower/lookout/punisher.go
@@ -45,7 +45,7 @@ func (p *BreachPunisher) Punish(desc *JusticeDescriptor, quit <-chan struct{}) e
 
 	err = p.cfg.PublishTx(justiceTxn)
 	if err != nil && err != lnwallet.ErrDoubleSpend {
-		log.Errorf("Unable to publish justice txn for client=%s",
+		log.Errorf("Unable to publish justice txn for client=%s"+
 			"with breach-txid=%x: %v",
 			desc.SessionInfo.ID, desc.BreachedCommitTx.TxHash(), err)
 		return err