diff --git a/examples/vibrate/main.go b/examples/vibrate/main.go
index c4e627c9d..4f6605ebb 100644
--- a/examples/vibrate/main.go
+++ b/examples/vibrate/main.go
@@ -39,7 +39,7 @@ type Game struct {
 
 func (g *Game) Update() error {
 	g.touchIDs = g.touchIDs[:0]
-	g.touchIDs = inpututil.AppendJustPressedTouchIDs(g.touchIDs)
+	g.touchIDs = inpututil.AppendJustPressedTouchIDs(g.touchIDs[:0])
 	if len(g.touchIDs) > 0 {
 		g.touchCounter++
 		op := &ebiten.VibrateOptions{