diff --git a/CapMachine.Wpf/PrismEvent/ChartRtEvent.cs b/CapMachine.Wpf/PrismEvent/ChartRtEvent.cs
index 241396c..2e3b281 100644
--- a/CapMachine.Wpf/PrismEvent/ChartRtEvent.cs
+++ b/CapMachine.Wpf/PrismEvent/ChartRtEvent.cs
@@ -1,10 +1,5 @@
 using CapMachine.Wpf.Models;
 using Prism.Events;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace CapMachine.Wpf.PrismEvent
 {