diff --git a/src/xhrInterceptor/XHRProxy.js b/src/xhrInterceptor/XHRProxy.js
index 97b9158..b04ef69 100644
--- a/src/xhrInterceptor/XHRProxy.js
+++ b/src/xhrInterceptor/XHRProxy.js
@@ -221,10 +221,10 @@
       var interceptors =
           utils.matchInterceptors('response', this.$TWPTRequestURL);
       if (interceptors.length > 0) {
-        this.xhr.addEventListener('load', function() {
+        this.addEventListener('load', function() {
           var body = utils.getResponseJSON({
-            responseType: proxyInstance.xhr.responseType,
-            response: proxyInstance.xhr.response,
+            responseType: proxyInstance.responseType,
+            response: proxyInstance.response,
             $TWPTRequestURL: proxyInstance.$TWPTRequestURL,
             $isArrayProto: proxyInstance.$isArrayProto,
           });