diff --git a/frontend/app/components/work-packages/work-package-cache.service.ts b/frontend/app/components/work-packages/work-package-cache.service.ts
index 2b72715411..62f26e6774 100644
--- a/frontend/app/components/work-packages/work-package-cache.service.ts
+++ b/frontend/app/components/work-packages/work-package-cache.service.ts
@@ -53,7 +53,7 @@ export class WorkPackageCacheService {
   }
 
   updateWorkPackage(wp: WorkPackageResource) {
-    this.states.workPackages.put(getWorkPackageId(wp.id), wp);
+    this.updateWorkPackageList([wp]);
   }
 
   updateWorkPackageList(list: WorkPackageResource[]) {