diff --git a/web/src/lib/components/shared-components/gallery-viewer/gallery-viewer.svelte b/web/src/lib/components/shared-components/gallery-viewer/gallery-viewer.svelte
index 7f87237054..82f876834a 100644
--- a/web/src/lib/components/shared-components/gallery-viewer/gallery-viewer.svelte
+++ b/web/src/lib/components/shared-components/gallery-viewer/gallery-viewer.svelte
@@ -99,7 +99,7 @@
   let scrollTop = $state(0);
   let slidingWindow = $derived.by(() => {
     const top = (scrollTop || 0) - slidingWindowOffset;
-    const bottom = top + viewport.height;
+    const bottom = top + viewport.height + slidingWindowOffset;
     return {
       top,
       bottom,