diff --git a/apps/angular/interop-rxjs-signal/src/app/photo.model.ts b/apps/angular/interop-rxjs-signal/src/app/photo.model.ts
index b20674f..c3360fd 100644
--- a/apps/angular/interop-rxjs-signal/src/app/photo.model.ts
+++ b/apps/angular/interop-rxjs-signal/src/app/photo.model.ts
@@ -10,7 +10,7 @@ export interface Photo {
   isfamily: number;
   datetaken: string;
   datetakengranularity: number;
-  datetakenunknown: unknown;
+  datetakenunknown: string;
   ownername: string;
   tags: string;
   url_q: string;