diff --git a/lib/wallet.js b/lib/wallet.js
index 482d4be..842d0ac 100644
--- a/lib/wallet.js
+++ b/lib/wallet.js
@@ -251,8 +251,9 @@ Wallet.prototype._scanChain = function (opts) {
 Wallet.prototype.isOwnOutput = function (output, cb) {
   if (!output.script) return cb(null, false)
   if (output.script.isPublicKeyHashOut() || output.script.isPublicKeyOut()) {
-    var pubHash = output.script.toAddress(this.network).hashBuffer
-    this.store.get(pubHash.toString('base64'), function (err, key) {
+    var addr = output.script.toAddress(this.network)
+    if (!addr) return cb(null, false)
+    this.store.get(addr.hashBuffer.toString('base64'), function (err, key) {
       if (err && !err.notFound) return cb(err)
       if (err && err.notFound) return cb(null, false)
       cb(null, true)
@@ -265,8 +266,9 @@ Wallet.prototype.isOwnOutput = function (output, cb) {
 Wallet.prototype.isOwnInput = function (input, cb) {
   if (!input.script) return cb(null, 0)
   if (input.script.isPublicKeyHashIn() || input.script.isPublicKeyIn()) {
-    var pubHash = input.script.toAddress(this.network).hashBuffer
-    this.store.get(pubHash.toString('base64'), function (err, key) {
+    var addr = input.script.toAddress(this.network)
+    if (!addr) return cb(null, false)
+    this.store.get(addr.hashBuffer.toString('base64'), function (err, key) {
       if (err && !err.notFound) return cb(err)
       if (err && err.notFound) return cb(null, false)
       cb(null, true)