diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index 15cb69ce..87520a37 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -219,10 +219,10 @@ Wallet.prototype.sign = function sign(tx, type, inputs, off) {
   inputs = inputs || tx.inputs;
 
   // Add signature script to each input
-  inputs.forEach(function(input, i) {
+  inputs = inputs.filter(function(input, i) {
     // Filter inputs that this wallet own
     if (!input.out.tx || !this.ownOutput(input.out.tx))
-      return;
+      return false;
 
     var s = input.out.tx.getSubscript(input.out.index);
     var hash = tx.subscriptHash(off + i, s, type);
@@ -231,11 +231,13 @@ Wallet.prototype.sign = function sign(tx, type, inputs, off) {
 
     if (bcoin.script.isPubkeyhash(s)) {
       input.script = [ signature, pub ];
-      return;
+      return true;
     }
 
     // Multisig
     input.script = [ [], signature ];
+
+    return true;
   }, this);
 
   return inputs.length;