diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/Planner.java b/ganttzk/src/main/java/org/zkoss/ganttz/Planner.java
index 63674c804..236b8b892 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/Planner.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/Planner.java
@@ -181,6 +181,7 @@ public class Planner extends XulElement {
     void removeTask(Task task) {
         TaskList taskList = getTaskList();
         taskList.remove(task);
+        getDependencyList().taskRemoved(task);
         leftPane.taskRemoved(task);
         setHeight(getHeight());// forcing smart update
         taskList.adjustZoomColumnsHeight();
diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
index 2fb156de8..87e4aebee 100755
--- a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
@@ -315,7 +315,6 @@ public class TaskComponent extends Div implements AfterCompose {
     }
 
     protected void remove() {
-        getDependencyList().taskRemoved(this.getTask());
         this.detach();
     }