diff --git a/src/flash.js b/src/flash.js
index af0faaf..9aaef7b 100644
--- a/src/flash.js
+++ b/src/flash.js
@@ -303,7 +303,8 @@ class Flash extends FakeEventTarget implements IEngine {
         EventType.SEEKED,
         EventType.ENDED,
         EventType.VIDEO_TRACK_CHANGED,
-        EventType.AUDIO_TRACK_CHANGED
+        EventType.AUDIO_TRACK_CHANGED,
+        EventType.DURATION_CHANGE
       ];
       events.forEach(eventName => {
         this._eventManager.listen(this._api, eventName, (event: FakeEvent) => this.dispatchEvent(event));
diff --git a/src/flashhls-adapter.js b/src/flashhls-adapter.js
index 661e0c0..f8ae5d4 100644
--- a/src/flashhls-adapter.js
+++ b/src/flashhls-adapter.js
@@ -127,7 +127,10 @@ class FlashHLSAdapter extends FakeEventTarget {
       },
       position: (timemetrics: Object) => {
         this.paused = false;
-        this.duration = timemetrics.duration;
+        if (this.duration != timemetrics.duration) {
+          this.duration = timemetrics.duration;
+          this._trigger(EventType.DURATION_CHANGE);
+        }
         this.buffer = timemetrics.buffer;
         this.watched = timemetrics.watched;
         if (this.currentTime != timemetrics.position || this.ended) {