diff --git a/step-01/js/main.js b/step-01/js/main.js
index 6a630db..96315d1 100644
--- a/step-01/js/main.js
+++ b/step-01/js/main.js
@@ -8,8 +8,12 @@ const mediaStreamConstraints = {
 // Video element where stream will be placed.
 const localVideo = document.querySelector('video');
 
+// Local stream that will be reproduced on the video.
+let localStream;
+
 // Handles success by adding the MediaStream to the video element.
 function gotLocalMediaStream(mediaStream) {
+  localStream = mediaStream;
   localVideo.srcObject = mediaStream;
 }