diff --git a/src/object-mapper.js b/src/object-mapper.js
index e6451a7..be5ff7c 100644
--- a/src/object-mapper.js
+++ b/src/object-mapper.js
@@ -76,7 +76,7 @@ function _map(fromObject, toObject, propertyMap, propertyKeys) {
 function _mapKey(fromObject, fromKey, toObject, toKey) {
   var fromValue
     , restToKeys
-    , _default = null
+    , _default // = null
     , transform
     ;
 
@@ -87,14 +87,14 @@ function _mapKey(fromObject, fromKey, toObject, toKey) {
   }
 
   if (toKey instanceof Object && Object.getPrototypeOf(toKey) === Object.prototype) {
-    _default = toKey.default || null;
+    _default = toKey.default; // || null;
     transform = toKey.transform;
     toKey = toKey.key;
   }
 
   if (Array.isArray(toKey)) {
     transform = toKey[1];
-    _default = toKey[2] || null;
+    _default = toKey[2]; // || null;
     toKey = toKey[0];
   }
 
@@ -103,7 +103,7 @@ function _mapKey(fromObject, fromKey, toObject, toKey) {
   }
 
   fromValue = getKeyValue(fromObject, fromKey);
-  if (typeof fromValue === 'undefined' || fromValue === null) {
+  if (typeof fromValue === 'undefined') { // || fromValue === null) {
     fromValue = _default;
   }
 
diff --git a/test/test.js b/test/test.js
index 741ee16..33c7c08 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1653,6 +1653,8 @@ test('original various tests', function (t) {
   t.deepEqual(result, expected, 'override sku');
 
   obj["inventory"] = null;
+  map["inventory.onHandQty"] = {key: ["Envelope.Request.Item.Inventory?", null, null]};
+  map["inventory.replenishQty"] = {key: ["Envelope.Request.Item.RelpenishQuantity?", null, null]};
   expected.Envelope.Request.Item.Inventory = null;
 
   result = merge(obj, {}, map);