diff --git a/designer-base/src/main/java/com/fr/design/notification/NotificationCenter.java b/designer-base/src/main/java/com/fr/design/notification/NotificationCenter.java
index 7ca868db59..17b805ab61 100644
--- a/designer-base/src/main/java/com/fr/design/notification/NotificationCenter.java
+++ b/designer-base/src/main/java/com/fr/design/notification/NotificationCenter.java
@@ -3,13 +3,14 @@ package com.fr.design.notification;
 
 import com.fr.design.notification.ui.NotificationCenterPane;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class NotificationCenter {
     private static NotificationCenter notificationCenter = new NotificationCenter();
     private List<Notification> notifications;
     private NotificationCenter(){
-        notifications = new ArrayList<>();
+        notifications = Collections.synchronizedList(new ArrayList<>());
     }
 
     public static NotificationCenter getInstance(){
@@ -17,8 +18,10 @@ public class NotificationCenter {
     }
 
     public void addNotification(Notification message){
-        notifications.add(message);
-        NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        synchronized (this) {
+            notifications.add(message);
+            NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        }
     }
 
     public int getNotificationsCount(){
@@ -26,17 +29,21 @@ public class NotificationCenter {
     }
 
     public void removeNotification(int index){
-         notifications.remove(index);
-         NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        synchronized (this) {
+            notifications.remove(index);
+            NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        }
     }
 
     public Notification getNotification(int index){
-       return notifications.get(index);
+        return notifications.get(index);
     }
 
     public void clearAllNotifications(){
-        notifications.clear();
-        NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        synchronized (this) {
+            notifications.clear();
+            NotificationCenterPane.getNotificationCenterPane().refreshButton();
+        }
     }
 
 }