diff --git a/web/src/lib/components/asset-viewer/asset-viewer.svelte b/web/src/lib/components/asset-viewer/asset-viewer.svelte
index c87baef42abc0..2a75ca4e83ab1 100644
--- a/web/src/lib/components/asset-viewer/asset-viewer.svelte
+++ b/web/src/lib/components/asset-viewer/asset-viewer.svelte
@@ -362,7 +362,7 @@
 
   const viewerKind = $derived.by(() => {
     if (previewStackedAsset) {
-      return asset.type === AssetTypeEnum.Image ? 'StackPhotoViewer' : 'StackVideoViewer';
+      return previewStackedAsset.type === AssetTypeEnum.Image ? 'StackPhotoViewer' : 'StackVideoViewer';
     }
     if (asset.type === AssetTypeEnum.Video) {
       return 'VideoViewer';