diff --git a/chainntnfs/bitcoindnotify/bitcoind.go b/chainntnfs/bitcoindnotify/bitcoind.go
index 8c235213..36f7ce19 100644
--- a/chainntnfs/bitcoindnotify/bitcoind.go
+++ b/chainntnfs/bitcoindnotify/bitcoind.go
@@ -521,7 +521,7 @@ func (b *BitcoindNotifier) confDetailsManually(txid *chainhash.Hash,
 
 	// Begin scanning blocks at every height to determine where the
 	// transaction was included in.
-	for height := heightHint; height <= currentHeight; height++ {
+	for height := currentHeight; height >= heightHint && height > 0; height-- {
 		// Ensure we haven't been requested to shut down before
 		// processing the next height.
 		select {
@@ -749,7 +749,7 @@ func (b *BitcoindNotifier) dispatchSpendDetailsManually(
 
 	// Begin scanning blocks at every height to determine if the outpoint
 	// was spent.
-	for height := startHeight; height <= endHeight; height++ {
+	for height := endHeight; height >= startHeight && height > 0; height-- {
 		// Ensure we haven't been requested to shut down before
 		// processing the next height.
 		select {
diff --git a/chainntnfs/btcdnotify/btcd.go b/chainntnfs/btcdnotify/btcd.go
index bb5e55a4..30b790dd 100644
--- a/chainntnfs/btcdnotify/btcd.go
+++ b/chainntnfs/btcdnotify/btcd.go
@@ -572,7 +572,7 @@ func (b *BtcdNotifier) confDetailsManually(txid *chainhash.Hash, startHeight,
 
 	// Begin scanning blocks at every height to determine where the
 	// transaction was included in.
-	for height := startHeight; height <= endHeight; height++ {
+	for height := endHeight; height >= startHeight && height > 0; height-- {
 		// Ensure we haven't been requested to shut down before
 		// processing the next height.
 		select {
diff --git a/chainntnfs/neutrinonotify/neutrino.go b/chainntnfs/neutrinonotify/neutrino.go
index 34b8285f..abc21671 100644
--- a/chainntnfs/neutrinonotify/neutrino.go
+++ b/chainntnfs/neutrinonotify/neutrino.go
@@ -467,7 +467,7 @@ func (n *NeutrinoNotifier) historicalConfDetails(targetHash *chainhash.Hash,
 
 	// Starting from the height hint, we'll walk forwards in the chain to
 	// see if this transaction has already been confirmed.
-	for scanHeight := startHeight; scanHeight <= endHeight; scanHeight++ {
+	for scanHeight := endHeight; scanHeight >= startHeight && scanHeight > 0; scanHeight-- {
 		// Ensure we haven't been requested to shut down before
 		// processing the next height.
 		select {