diff --git a/lib/youtube-dl.js b/lib/youtube-dl.js
index ba2d83a..60d2396 100644
--- a/lib/youtube-dl.js
+++ b/lib/youtube-dl.js
@@ -222,18 +222,21 @@ function parseInfo(data) {
 
   // Add and process some entries to keep backwards compatibility
   Object.defineProperty(info, 'filename', {
+    configurable: true,
     get: function get() {
       console.warn('`info.filename` is deprecated, use `info._filename`');
       return info._filename;
     }
   });
   Object.defineProperty(info, 'itag', {
+    configurable: true,
     get: function get() {
       console.warn('`info.itag` is deprecated, use `info.format_id`');
       return info.format_id;
     }
   });
   Object.defineProperty(info, 'resolution', {
+    configurable: true,
     get: function get() {
       console.warn('`info.resolution` is deprecated, use `info.format`');
       return info.format.split(' - ')[1];