diff --git a/src/local-track.ts b/src/local-track.ts
index 838e8e4..7fdddfc 100644
--- a/src/local-track.ts
+++ b/src/local-track.ts
@@ -4,6 +4,10 @@ import { Track } from './track';
  * A wrapper around MediaStreamTrack.
  */
 export class LocalTrack extends Track {
+  static Events = {
+    TrackUpdate: 'track-update',
+  };
+
   /**
    * Exchange the underlying track with a new track. Emit the `track-update` event to alert
    * listeners to an update on a new track.
@@ -12,7 +16,7 @@ export class LocalTrack extends Track {
    * @fires LocalTrack#track-update
    */
   replaceUnderlyingTrack(track: MediaStreamTrack): void {
-    this.emit('track-update', this.getUnderlyingTrack().id, track);
+    this.emit(LocalTrack.Events.TrackUpdate, this.getUnderlyingTrack().id, track);
     this.getUnderlyingTrack().stop();
     this.setUnderlyingTrack(track);
   }
diff --git a/src/peer-connection.ts b/src/peer-connection.ts
index 9f8452d..7a8be40 100644
--- a/src/peer-connection.ts
+++ b/src/peer-connection.ts
@@ -29,7 +29,7 @@ class PeerConnection {
    * @listens LocalTrack#track-update
    */
   addTrack(track: LocalTrack, ...streams: MediaStream[]): RTCRtpSender {
-    track.on('track-update', this.handleTrackUpdate);
+    track.on(LocalTrack.Events.TrackUpdate, this.handleTrackUpdate);
     return this.pc.addTrack(track.getUnderlyingTrack(), ...streams);
   }