diff --git a/TestBenchFramework/BenchControl/TestMethods/Adjustment/WMErrorsForm.cs b/TestBenchFramework/BenchControl/TestMethods/Adjustment/WMErrorsForm.cs
index 8401a71e9..fc63672d3 100644
--- a/TestBenchFramework/BenchControl/TestMethods/Adjustment/WMErrorsForm.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/Adjustment/WMErrorsForm.cs
@@ -139,12 +139,16 @@ namespace TBF.BenchControl.TestMethods.Adjustment
 			Rectangle rect1 = new Rectangle(r.Left, r.Top, r.Width / 3, r.Height);
 			Rectangle rect2 = new Rectangle(r.Left + r.Width / 3, r.Top, r.Width / 3, r.Height);
 			Rectangle rect3 = new Rectangle(r.Left + 2 * (r.Width / 3), r.Top, r.Width / 3, r.Height);
+			Rectangle rectCent = new Rectangle(r.Left + r.Width / 2 - 1, r.Top, 3, r.Height);
 
 			Brush redBrush = new SolidBrush(Color.FromName("Salmon"));
 			Brush greenBrush = new SolidBrush(Color.FromName("LightGreen"));
+			Brush centBrush = new SolidBrush(Color.FromName("Green"));
+
 			g.FillRectangle(redBrush, rect1);
 			g.FillRectangle(greenBrush, rect2);
 			g.FillRectangle(redBrush, rect3);
+			g.FillRectangle(centBrush, rectCent);
 
 			int x0 = r.Left + r.Width / 2;
 			int dx = r.Height / 3;