diff --git a/backends/pixel/pixel.go b/backends/pixel/pixel.go
index 9e8adf3..8209b56 100644
--- a/backends/pixel/pixel.go
+++ b/backends/pixel/pixel.go
@@ -151,7 +151,7 @@ func (backend *Backend) draw () {
 				backend.backgroundStamper.Push (
 					backend.vectorAtPosition(x, y),
 					backend.vectorAtPosition(x + 1, y + 1))
-				backend.backgroundStamper.Rectangle(1)
+				backend.backgroundStamper.Rectangle(0)
 				// didDrawing = true
 			}
 		}