diff --git a/lnwallet/channel.go b/lnwallet/channel.go
index 9b5421f8..cfe0c20a 100644
--- a/lnwallet/channel.go
+++ b/lnwallet/channel.go
@@ -998,7 +998,7 @@ func (lc *LightningChannel) ExtendRevocationWindow() (*lnwire.CommitRevocation,
 
 // AddPayment adds a new HTLC to either the local or remote HTLC log depending
 // on the value of 'incoming'.
-func (lc *LightningChannel) AddHTLC(htlc *lnwire.HTLCAddRequest, incoming bool) error {
+func (lc *LightningChannel) AddHTLC(htlc *lnwire.HTLCAddRequest, incoming bool) uint32 {
 	pd := &PaymentDescriptor{
 		entryType:  Add,
 		RHash:      PaymentHash(htlc.RedemptionHashes[0]),
@@ -1019,7 +1019,7 @@ func (lc *LightningChannel) AddHTLC(htlc *lnwire.HTLCAddRequest, incoming bool)
 	pd.Index = index
 	lc.stateUpdateLog.PushBack(pd)
 
-	return nil
+	return index
 }
 
 // SettleHTLC attempts to settle an existing outstanding HTLC with an htlc
diff --git a/lnwallet/channel_test.go b/lnwallet/channel_test.go
index 4402b5d5..969a7294 100644
--- a/lnwallet/channel_test.go
+++ b/lnwallet/channel_test.go
@@ -225,15 +225,11 @@ func TestSimpleAddSettleWorkflow(t *testing.T) {
 
 	// First Alice adds the outgoing HTLC to her local channel's state
 	// update log.
-	if err := aliceChannel.AddHTLC(htlc, false); err != nil {
-		t.Fatalf("unable to add htlc to alice's channel: %v", err)
-	}
+	aliceChannel.AddHTLC(htlc, false)
 
 	// Then Alice sends this wire message over to Bob who also adds this
 	// htlc to his local state update log.
-	if err := bobChannel.AddHTLC(htlc, true); err != nil {
-		t.Fatalf("unable to add htlc bob's channel: %v", err)
-	}
+	bobChannel.AddHTLC(htlc, true)
 
 	// Next alice commits this change by sending a signature message.
 	aliceSig, bobLogIndex, err := aliceChannel.SignNextCommitment()