diff --git a/lib/ads/interstitial_ad_manager.js b/lib/ads/interstitial_ad_manager.js
index c99a5cec22..eb350de2e9 100644
--- a/lib/ads/interstitial_ad_manager.js
+++ b/lib/ads/interstitial_ad_manager.js
@@ -324,7 +324,7 @@ shaka.ads.InterstitialAdManager = class {
     const interstitial = {
       id: null,
       startTime: region.startTime,
-      endTime: isReplace ? region.endTime : null,
+      endTime: region.endTime,
       uri: alternativeMPDUri,
       isSkippable: false,
       skipOffset: null,