diff --git a/server/src/queries/asset.repository.sql b/server/src/queries/asset.repository.sql
index 1ebe3f7f0c..7866827e8f 100644
--- a/server/src/queries/asset.repository.sql
+++ b/server/src/queries/asset.repository.sql
@@ -335,7 +335,7 @@ with
       coalesce(array_agg("ratio"), '{}') as "ratio",
       coalesce(array_agg("status"), '{}') as "status",
       coalesce(array_agg("thumbhash"), '{}') as "thumbhash",
-      coalesce(array_agg("stack"), '{}') as "stack"
+      coalesce(json_agg("stack"), '[]') as "stack"
     from
       "cte"
   )
diff --git a/server/src/repositories/asset.repository.ts b/server/src/repositories/asset.repository.ts
index a32957d17f..0a8d31b826 100644
--- a/server/src/repositories/asset.repository.ts
+++ b/server/src/repositories/asset.repository.ts
@@ -692,7 +692,7 @@ export class AssetRepository {
             eb.fn.coalesce(eb.fn('array_agg', ['thumbhash']), sql.lit('{}')).as('thumbhash'),
           ])
           .$if(!!options.withStacked, (qb) =>
-            qb.select((eb) => eb.fn.coalesce(eb.fn('array_agg', ['stack']), sql.lit('{}')).as('stack')),
+            qb.select((eb) => eb.fn.coalesce(eb.fn('json_agg', ['stack']), sql.lit('[]')).as('stack')),
           ),
       )
       .selectFrom('agg')
diff --git a/web/src/test-data/factories/asset-factory.ts b/web/src/test-data/factories/asset-factory.ts
index efe3e6273b..aef7b5f16d 100644
--- a/web/src/test-data/factories/asset-factory.ts
+++ b/web/src/test-data/factories/asset-factory.ts
@@ -79,7 +79,7 @@ export const toResponseDto = (...timelineAsset: TimelineAsset[]) => {
     bucketAssets.ownerId.push(asset.ownerId);
     bucketAssets.projectionType.push(asset.projectionType!);
     bucketAssets.ratio.push(asset.ratio);
-    bucketAssets.stack?.push(asset.stack ? [asset.stack.id, asset.stack.assetCount] : null);
+    bucketAssets.stack?.push(asset.stack ? [asset.stack.id, asset.stack.assetCount.toString()] : null);
     bucketAssets.thumbhash.push(asset.thumbhash!);
   }