diff --git a/frontend/src/app/services/lighthouse.service.ts b/frontend/src/app/services/lighthouse.service.ts
index a8d61e75..6c2f3ba1 100644
--- a/frontend/src/app/services/lighthouse.service.ts
+++ b/frontend/src/app/services/lighthouse.service.ts
@@ -45,6 +45,10 @@ export class LighthouseService {
     } else {
       filter.searchAfter = []
     }
+    if(environment.environment_desktop){
+      filter.app = "fastenhealth.desktop"
+    }
+
     const endpointUrl = new URL(`${environment.lighthouse_api_endpoint_base}/search`);
     return this._httpClient.post<ResponseWrapper>(endpointUrl.toString(), filter)
       .pipe(
diff --git a/frontend/src/app/services/medical-sources-filter.service.ts b/frontend/src/app/services/medical-sources-filter.service.ts
index 3d95a066..56fd0e37 100644
--- a/frontend/src/app/services/medical-sources-filter.service.ts
+++ b/frontend/src/app/services/medical-sources-filter.service.ts
@@ -19,6 +19,8 @@ export class MedicalSourcesFilter {
   searchAfter: string | string[] = '';
 
   fields: string[] = []; //specify the fields to return. if null or empty list, return all.
+
+  app?: string
 }