diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/DependencyComponent.java b/ganttzk/src/main/java/org/zkoss/ganttz/DependencyComponent.java
index 283299b71..0e17ac3f4 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/DependencyComponent.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/DependencyComponent.java
@@ -148,7 +148,7 @@ public class DependencyComponent extends XulElement implements AfterCompose {
     }
 
     public void redrawDependency() {
-        response("zoomChanged", new AuInvoke(this, "draw"));
+        response("redrawDependency" + getId(), new AuInvoke(this, "draw"));
     }
 
     public boolean contains(Task task) {