diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
index 9770a3935..32743e614 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
@@ -491,7 +491,7 @@ public class TaskComponent extends Div implements AfterCompose {
         updateCompletionAdvance();
     }
 
-    private void updateCompletionReportedHours() {
+    public void updateCompletionReportedHours() {
         if (task.isShowingReportedHours()) {
             int startPixels = this.task.getBeginDate().toPixels(getMapper());
             String widthHoursAdvancePercentage = pixelsFromStartUntil(
diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/TaskList.java b/ganttzk/src/main/java/org/zkoss/ganttz/TaskList.java
index f1b66e0aa..d4128d163 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/TaskList.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/TaskList.java
@@ -97,6 +97,7 @@ public class TaskList extends XulElement implements AfterCompose {
     public void updateCompletion(String progressType) {
         for (TaskComponent task: getTaskComponents()) {
             task.updateCompletion(progressType);
+            task.updateCompletionReportedHours();
             task.updateTooltipText(progressType);
         }
     }