diff --git a/Source/GrasscutterTools/Forms/FormMain.cs b/Source/GrasscutterTools/Forms/FormMain.cs
index ec4afac..f451967 100644
--- a/Source/GrasscutterTools/Forms/FormMain.cs
+++ b/Source/GrasscutterTools/Forms/FormMain.cs
@@ -470,11 +470,11 @@ namespace GrasscutterTools.Forms
             {
                 if (WindowState == FormWindowState.Maximized)
                     WindowState = FormWindowState.Normal;
-                TCMain.Anchor &= ~AnchorStyles.Bottom;
+                NavContainer.Anchor &= ~AnchorStyles.Bottom;
                 GrpCommand.Anchor |= AnchorStyles.Top;
                 Size = new Size(Width, Height + TxtCommandRunLogMinHeight);
                 MinimumSize = new Size(MinimumSize.Width, MinimumSize.Height + TxtCommandRunLogMinHeight);
-                TCMain.Anchor |= AnchorStyles.Bottom;
+                NavContainer.Anchor |= AnchorStyles.Bottom;
                 GrpCommand.Anchor &= ~AnchorStyles.Top;
             }