diff --git a/lib/transaction/transaction.js b/lib/transaction/transaction.js
index f15043c..ee8499b 100644
--- a/lib/transaction/transaction.js
+++ b/lib/transaction/transaction.js
@@ -472,7 +472,7 @@ Transaction.prototype.fromObject = function fromObject(arg) {
   var self = this;
   var transaction;
   if (arg instanceof Transaction) {
-    transaction = transaction.toObject();
+    transaction = arg.toObject();
   } else {
     transaction = arg;
   }
diff --git a/test/transaction/fromObject.js b/test/transaction/fromObject.js
new file mode 100644
index 0000000..61c488e
--- /dev/null
+++ b/test/transaction/fromObject.js
@@ -0,0 +1,23 @@
+'use strict';
+
+require('chai').should();
+
+var bitcore = require('../../index-test');
+var Transaction = bitcore.Transaction;
+
+describe('Transaction', function() {
+
+  describe('#fromObject', function() {
+
+    it('builds from a Transaction instance and preserves its data', function() {
+      var source = new Transaction().lockUntilBlockHeight(123);
+
+      var target = new Transaction().fromObject(source);
+
+      target.nLockTime.should.equal(123);
+      target.toObject().should.deep.equal(source.toObject());
+    });
+
+  });
+
+});