diff --git a/lib/ads/interstitial_ad_manager.js b/lib/ads/interstitial_ad_manager.js
index 34aaa7f67f..7d0e667f8f 100644
--- a/lib/ads/interstitial_ad_manager.js
+++ b/lib/ads/interstitial_ad_manager.js
@@ -129,6 +129,10 @@ shaka.ads.InterstitialAdManager = class {
       }
     };
 
+    this.eventManager_.listen(this.baseVideo_, 'ended', () => {
+      checkForInterstitials();
+    });
+
     /** @private {shaka.util.Timer} */
     this.timeUpdateTimer_ = new shaka.util.Timer(checkForInterstitials);