diff --git a/indicators/MovingAverage.cs b/indicators/MovingAverage.cs
index c7f03e1..55809e5 100644
--- a/indicators/MovingAverage.cs
+++ b/indicators/MovingAverage.cs
@@ -1,13 +1,9 @@
 #region Using declarations
-using System;
 using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
 using System.Windows.Media;
 using System.Xml.Serialization;
-using NinjaTrader.Cbi;
 using NinjaTrader.Gui;
-using NinjaTrader.Gui.Chart;
-using NinjaTrader.NinjaScript;
 #endregion
 
 // Do not change the namespace.
@@ -21,8 +17,9 @@ namespace NinjaTrader.NinjaScript.Indicators
         {
             if (State == State.SetDefaults)
             {
-                Description = "Simple moving average indicator";
+                Description = "Basic moving average indicator";
                 Name = "Moving Average";
+                Calculate = Calculate.OnPriceChange;
                 IsOverlay = true;
                 IsSuspendedWhileInactive = true;
                 Period = 20;