diff --git a/ShareX.ScreenCaptureLib/Forms/RectangleRegionForm.cs b/ShareX.ScreenCaptureLib/Forms/RectangleRegionForm.cs
index feb18756b..5bcefe226 100644
--- a/ShareX.ScreenCaptureLib/Forms/RectangleRegionForm.cs
+++ b/ShareX.ScreenCaptureLib/Forms/RectangleRegionForm.cs
@@ -726,7 +726,11 @@ private Bitmap Magnifier(Image img, Point position, int horizontalPixelCount, in
                 }
 
                 g.DrawRectangle(Pens.Black, (width - pixelSize) / 2 - 1, (height - pixelSize) / 2 - 1, pixelSize, pixelSize);
-                g.DrawRectangle(Pens.White, (width - pixelSize) / 2, (height - pixelSize) / 2, pixelSize - 2, pixelSize - 2);
+
+                if (pixelSize >= 6)
+                {
+                    g.DrawRectangle(Pens.White, (width - pixelSize) / 2, (height - pixelSize) / 2, pixelSize - 2, pixelSize - 2);
+                }
             }
 
             return bmp;