diff --git a/backend/src/main/java/core/entities/timemanager/Taskgroup.java b/backend/src/main/java/core/entities/timemanager/Taskgroup.java
index 5effc3f..cc16b99 100644
--- a/backend/src/main/java/core/entities/timemanager/Taskgroup.java
+++ b/backend/src/main/java/core/entities/timemanager/Taskgroup.java
@@ -33,7 +33,7 @@ public class Taskgroup {
     private Taskgroup parent;
 
 
-    @OneToMany(mappedBy = "taskgroup", cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true)
+    @OneToMany(mappedBy = "taskgroup", cascade = CascadeType.REMOVE, fetch = FetchType.EAGER, orphanRemoval = true)
     private Set<Task> tasks;
 
     public Taskgroup(String taskgroupName, User user) {