diff --git a/MainFrm.cs b/MainFrm.cs
index 7c574c1..f6f4616 100644
--- a/MainFrm.cs
+++ b/MainFrm.cs
@@ -6192,7 +6192,7 @@
         /// <param name="e"></param>
         private void dataGridViewX1_MouseDoubleClick(object sender, MouseEventArgs e)
         {
-            if (redSH == false)
+            if (!redSH)
             {
                 if (e.Button == MouseButtons.Left)
                 {