From e4448a679ed49660abca076b10f0727f94d88632 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Velad=20Galv=C3=A1n?= <alvaro.velad@mirada.tv>
Date: Wed, 12 Jan 2022 17:53:29 +0100
Subject: [PATCH] Update client_side_ad.js

---
 lib/ads/client_side_ad.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ads/client_side_ad.js b/lib/ads/client_side_ad.js
index 46b175fd28..f9bf9ccdf0 100644
--- a/lib/ads/client_side_ad.js
+++ b/lib/ads/client_side_ad.js
@@ -183,7 +183,7 @@ shaka.ads.ClientSideAd = class {
     let isInFullscreen = false;
     const video = /** @type {HTMLVideoElement} */(this.video_);
     if (document.fullscreenEnabled) {
-      isInFullscreen = document.fullscreenElement;
+      isInFullscreen = !!document.fullscreenElement;
     } else if (video.webkitSupportsFullscreen) {
       isInFullscreen = video.webkitDisplayingFullscreen;
     }