diff --git a/examples/mobile/main_mobile.go b/examples/mobile/main_mobile.go
index a85a70c2f..4fe7d6def 100644
--- a/examples/mobile/main_mobile.go
+++ b/examples/mobile/main_mobile.go
@@ -33,6 +33,6 @@ import (
 
 type EventDispatcher mobile.EventDispatcher
 
-func Start(viewID int) (EventDispatcher, error) {
-	return mobile.Start(example.Update, example.ScreenWidth, example.ScreenHeight, 2, "Mobile (Ebiten Demo)", viewID)
+func Start() (EventDispatcher, error) {
+	return mobile.Start(example.Update, example.ScreenWidth, example.ScreenHeight, 2, "Mobile (Ebiten Demo)")
 }
diff --git a/mobile/run.go b/mobile/run.go
index 3657f89d0..4f69c66d7 100644
--- a/mobile/run.go
+++ b/mobile/run.go
@@ -40,7 +40,7 @@ type EventDispatcher interface {
 // Start starts the game and returns immediately.
 //
 // Different from ebiten.Run, this invokes only the game loop and not the main (UI) loop.
-func Start(f func(*ebiten.Image) error, width, height, scale int, title string, viewID int) (EventDispatcher, error) {
+func Start(f func(*ebiten.Image) error, width, height, scale int, title string) (EventDispatcher, error) {
 	chError = ebiten.RunWithoutMainLoop(f, width, height, scale, title)
 	return &eventDispatcher{}, nil
 }