diff --git a/createtx.go b/createtx.go
index 0a0f98e..06dd4fc 100644
--- a/createtx.go
+++ b/createtx.go
@@ -126,7 +126,7 @@ func selectInputs(s tx.UtxoStore, amt uint64, minconf int) (inputs []*tx.Utxo, b
 		// to a change address, resulting in a UTXO not yet mined in a block.
 		// For now, disallow creating transactions until these UTXOs are mined
 		// into a block and show up as part of the balance.
-		if utxo.Height != -1 && int(bs.Height-utxo.Height) >= minconf {
+		if confirmed(minconf, utxo.Height, bs.Height) {
 			eligible = append(eligible, utxo)
 		}
 	}
diff --git a/createtx_test.go b/createtx_test.go
index b9f5070..42b8378 100644
--- a/createtx_test.go
+++ b/createtx_test.go
@@ -118,7 +118,7 @@ func TestFakeTxs(t *testing.T) {
 	pairs := map[string]int64{
 		"17XhEvq9Nahdj7Xe1nv6oRe1tEmaHUuynH": 5000,
 	}
-	_, err = a.txToPairs(pairs, 0)
+	_, err = a.txToPairs(pairs, 1)
 	if err != nil {
 		t.Errorf("Tx creation failed: %s", err)
 		return