diff --git a/src/common/xhrInterceptorUtils.js b/src/common/xhrInterceptorUtils.js
index 867c323..526296c 100644
--- a/src/common/xhrInterceptorUtils.js
+++ b/src/common/xhrInterceptorUtils.js
@@ -1,3 +1,5 @@
+import {correctArrayKeys} from '../common/protojs';
+
 import xhrInterceptors from './xhrInterceptors.json5';
 
 export {xhrInterceptors};
@@ -10,25 +12,30 @@
 }
 
 export function getResponseJSON(xhr) {
+  let response;
   if (xhr.responseType === 'arraybuffer') {
     var arrBuffer = xhr.response;
     if (!arrBuffer) {
       console.error('No array buffer.');
       return undefined;
     }
-    var byteArray = new Uint8Array(arrBuffer);
-    var dec = new TextDecoder('utf-8');
-    var rawResponse = dec.decode(byteArray);
-    return JSON.parse(rawResponse);
+    let byteArray = new Uint8Array(arrBuffer);
+    let dec = new TextDecoder('utf-8');
+    let rawResponse = dec.decode(byteArray);
+    response = JSON.parse(rawResponse);
+  } else if (xhr.responseType === 'text' || xhr.responseType === '') {
+    response = JSON.parse(xhr.responseText);
+  } else if (xhr.responseType === 'json') {
+    response = xhr.response;
+  } else {
+    console.error(
+        'Unexpected responseType ' + xhr.responseType + '. Request url: ',
+        xhr.$TWPTRequestURL);
+    return undefined;
   }
-  if (xhr.responseType === 'text' || xhr.responseType === '')
-    return JSON.parse(xhr.responseText);
-  if (xhr.responseType === 'json') return xhr.response;
 
-  console.error(
-      'Unexpected responseType ' + xhr.responseType + '. Request url: ',
-      xhr.$TWPTRequestURL);
-  return undefined;
+  if (xhr.$isArrayProto) response = correctArrayKeys(response);
+  return response;
 }
 
 export function triggerEvent(eventName, body, id) {