diff --git a/src/xhrInterceptor/XHRProxy.js b/src/xhrInterceptor/XHRProxy.js
index 288142a..2d6d03f 100644
--- a/src/xhrInterceptor/XHRProxy.js
+++ b/src/xhrInterceptor/XHRProxy.js
@@ -166,7 +166,6 @@
       'onprogress',
       'onreadystatechange',
       'readyState',
-      'responseText',
       'responseType',
       'responseXML',
       'status',
@@ -202,6 +201,13 @@
         return this.xhr.response;
       },
     });
+    Object.defineProperty(window.XMLHttpRequest.prototype, 'responseText', {
+      get: function() {
+        if (!this.$responseIntercepted) return undefined;
+        if (this.$responseModified) return this.$newResponseText;
+        return this.xhr.responseText;
+      },
+    });
 
     return this;
   }