diff --git a/web/src/lib/components/asset-viewer/asset-viewer.svelte b/web/src/lib/components/asset-viewer/asset-viewer.svelte
index 9d5530df0f..932d10925e 100644
--- a/web/src/lib/components/asset-viewer/asset-viewer.svelte
+++ b/web/src/lib/components/asset-viewer/asset-viewer.svelte
@@ -338,7 +338,7 @@
     onAction?.(action);
   };
 
-  let isFullScreen = $derived(fullscreenElement !== null);
+  let isFullScreen = $derived(!!fullscreenElement);
 
   $effect(() => {
     if (album && !album.isActivityEnabled && activityManager.commentCount === 0) {