diff --git a/frontend/src/app/core/state/attachments/attachments.service.ts b/frontend/src/app/core/state/attachments/attachments.service.ts
index 6aa043a5f4..195e7a2afe 100644
--- a/frontend/src/app/core/state/attachments/attachments.service.ts
+++ b/frontend/src/app/core/state/attachments/attachments.service.ts
@@ -96,7 +96,7 @@ export class AttachmentsResourceService {
    *
    * @param key the collection key
    */
-  all(key:string):Observable<IAttachment[]> {
+  collection(key:string):Observable<IAttachment[]> {
     return this.query
       .select()
       .pipe(
diff --git a/frontend/src/app/features/work-packages/components/wp-tabs/services/wp-tabs/wp-files-count.function.ts b/frontend/src/app/features/work-packages/components/wp-tabs/services/wp-tabs/wp-files-count.function.ts
index a70a016961..760ee97820 100644
--- a/frontend/src/app/features/work-packages/components/wp-tabs/services/wp-tabs/wp-files-count.function.ts
+++ b/frontend/src/app/features/work-packages/components/wp-tabs/services/wp-tabs/wp-files-count.function.ts
@@ -42,7 +42,7 @@ export function workPackageFilesCount(
 
   return combineLatest(
     [
-      attachmentService.all(workPackage.$links.attachments.href || ''),
+      attachmentService.collection(workPackage.$links.attachments.href || ''),
       fileLinkService.all(workPackage.$links.fileLinks?.href || ''),
     ],
   ).pipe(