diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5098ecccba..b2f0d30e7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ CHANGELOG
 * @BrandonOCasey converted remaining text-track modules to ES6 ([view](https://github.com/videojs/video.js/pull/3130))
 * @gkatsev cleared waiting/spinner on timeupdate. Fixes #3124 ([view](https://github.com/videojs/video.js/pull/3138))
 * @BrandonOCasey updated text track unit tests to use full es6 syntax ([view](https://github.com/videojs/video.js/pull/3148))
+* @defli added missing var to sandbox index.html example ([view](https://github.com/videojs/video.js/pull/3155))
 
 --------------------
 
diff --git a/sandbox/index.html.example b/sandbox/index.html.example
index 438bedefe8..942d1e779d 100644
--- a/sandbox/index.html.example
+++ b/sandbox/index.html.example
@@ -37,7 +37,7 @@
   </video>
 
   <script>
-    vid = document.getElementById("vid1");
+    var vid = document.getElementById("vid1");
   </script>
 
 </body>