diff --git a/packages/backend/src/db/scylla.ts b/packages/backend/src/db/scylla.ts
index 1f38cee5f3..16bc68b954 100644
--- a/packages/backend/src/db/scylla.ts
+++ b/packages/backend/src/db/scylla.ts
@@ -140,7 +140,7 @@ export function parseScyllaNotification(row: types.Row): ScyllaNotification {
 export interface ScyllaDriveFile {
 	id: string;
 	type: string;
-	createdAt: Date;
+	createdAt: Date | string;
 	name: string;
 	comment: string | null;
 	blurhash: string | null;
diff --git a/packages/backend/src/models/repositories/note.ts b/packages/backend/src/models/repositories/note.ts
index 7744128507..a65df2b582 100644
--- a/packages/backend/src/models/repositories/note.ts
+++ b/packages/backend/src/models/repositories/note.ts
@@ -327,7 +327,10 @@ export const NoteRepository = db.getRepository(Note).extend({
 				? (note as ScyllaNote).files.map((file) => ({
 						...file,
 						thumbnailUrl: getScyllaDrivePublicUrl(file, true),
-						createdAt: file.createdAt.toISOString(),
+						createdAt: (typeof file.createdAt === "string"
+							? new Date(file.createdAt)
+							: file.createdAt
+						).toISOString(),
 						properties: {
 							width: file.width ?? undefined,
 							height: file.height ?? undefined,