diff --git a/lib/6to5/transformation/transformers/optimisation/react/base.js b/lib/6to5/transformation/transformers/optimisation/react/base.js
index e458ac0198..4b3b99a177 100644
--- a/lib/6to5/transformation/transformers/optimisation/react/base.js
+++ b/lib/6to5/transformation/transformers/optimisation/react/base.js
@@ -46,8 +46,10 @@ BaseOptimiser.prototype.addPropTypes = function (node) {
  *
  * We'll try and resolve it to a known type if we can and normalise
  * it for consumption later.
+ *
+ * @param {Node} prop
  */
 
-BaseOptimiser.prototype.addPropType = function (prop) {
+BaseOptimiser.prototype.addPropType = function () {
 
 };
diff --git a/lib/6to5/transformation/transformers/optimisation/react/create-class.js b/lib/6to5/transformation/transformers/optimisation/react/create-class.js
index 4ae6630152..96f023680e 100644
--- a/lib/6to5/transformation/transformers/optimisation/react/create-class.js
+++ b/lib/6to5/transformation/transformers/optimisation/react/create-class.js
@@ -2,6 +2,7 @@ module.exports = CreateClassOptimiser;
 
 var BaseOptimiser = require("./base");
 var util          = require("../../../../util");
+var t             = require("../../../../types");
 
 function CreateClassOptimiser() {
   BaseOptimiser.apply(this, arguments);
diff --git a/lib/6to5/types/index.js b/lib/6to5/types/index.js
index 854eab9cc6..a7bd66ab0f 100644
--- a/lib/6to5/types/index.js
+++ b/lib/6to5/types/index.js
@@ -413,11 +413,11 @@ t.ensureBlock = function (node, key) {
 t.buildMatchMemberExpression = function (match) {
   var parts = match.split(".");
 
-  return function (node) {
+  return function (member) {
     // not a member expression
-    if (!t.isMemberExpression(node)) return false;
+    if (!t.isMemberExpression(member)) return false;
 
-    var search = [];
+    var search = [member];
     var i = 0;
 
     while (search.length) {