diff --git a/Terminal.Gui/View/Adornment/ShadowView.cs b/Terminal.Gui/View/Adornment/ShadowView.cs
index 1ca027ade..c9893c65c 100644
--- a/Terminal.Gui/View/Adornment/ShadowView.cs
+++ b/Terminal.Gui/View/Adornment/ShadowView.cs
@@ -109,7 +109,7 @@ internal class ShadowView : View
         Rectangle screen = ViewportToScreen (viewport);
 
         // Fill the rest of the rectangle - note we skip the last since vertical will draw it
-        for (int i = screen.X; i < screen.X + screen.Width - 1; i++)
+        for (int i = screen.X + 1; i < screen.X + screen.Width - 1; i++)
         {
             Driver.Move (i, screen.Y);