diff --git a/examples/paint/main.go b/examples/paint/main.go
index 6ca4ca7ae..9982715ce 100644
--- a/examples/paint/main.go
+++ b/examples/paint/main.go
@@ -42,7 +42,7 @@ func paint(screen *ebiten.Image, x, y int) {
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Translate(float64(x), float64(y))
 	op.ColorM.Scale(1.0, 0.50, 0.125, 1.0)
-	theta := 2.0 * math.Pi * float64(count%60) / ebiten.FPS
+	theta := 2.0 * math.Pi * float64(count%ebiten.FPS) / ebiten.FPS
 	op.ColorM.RotateHue(theta)
 	canvasImage.DrawImage(brushImage, op)
 }