diff --git a/ui-ngx/src/app/core/http/entity.service.ts b/ui-ngx/src/app/core/http/entity.service.ts
index 58cd3225ab..c7213ac11f 100644
--- a/ui-ngx/src/app/core/http/entity.service.ts
+++ b/ui-ngx/src/app/core/http/entity.service.ts
@@ -1321,7 +1321,7 @@ export class EntityService {
     return entitiesObservable;
   }
 
-  public getEdgeEventContentByEntityType(entity: any) {
+  public getEdgeEventContentByEntityType(entity: any): Observable<any> {
     let entityObservable: Observable<any>;
     switch (entity.type) {
       case EdgeEventType.DASHBOARD: