diff --git a/wallet/chainntfns.go b/wallet/chainntfns.go
index 990d8bc..4182ad2 100644
--- a/wallet/chainntfns.go
+++ b/wallet/chainntfns.go
@@ -280,11 +280,19 @@ func (w *Wallet) addRelevantTx(dbtx walletdb.ReadWriteTx, rec *wtxmgr.TxRecord,
 	// relevant.  This assumption will not hold true when SPV support is
 	// added, but until then, simply insert the transaction because there
 	// should either be one or more relevant inputs or outputs.
-	err := w.TxStore.InsertTx(txmgrNs, rec, block)
+	exists, err := w.TxStore.InsertTxCheckIfExists(txmgrNs, rec, block)
 	if err != nil {
 		return err
 	}
 
+	// If the transaction has already been recorded, we can return early.
+	// Note: Returning here is safe as we're within the context of an atomic
+	// database transaction, so we don't need to worry about the MarkUsed
+	// calls below.
+	if exists {
+		return nil
+	}
+
 	// Check every output to determine whether it is controlled by a wallet
 	// key.  If so, mark the output as a credit.
 	for i, output := range rec.MsgTx.TxOut {