diff --git a/iOS.md b/iOS.md
index b0f7e24..e248c75 100644
--- a/iOS.md
+++ b/iOS.md
@@ -16,7 +16,7 @@ Use `gomobile bind`, generate an .framework file and import this to your Xcode a
 
 ## Implement Objective-C classes
 
-The below implementation implements a GLKView class and its Renderer class. When the view's `glkView:drawInRect:` is called, the size of view is calculated and the game starts if the game doesn't start yet.
+The below implementation implements a GLKView class and its Renderer class. When the view's `viewDidLayoutSubviews` is called, the size of view is calculated and the game starts if the game doesn't start yet.
 
 For an actual example, see [go-inovation's ViewController.m](https://github.com/hajimehoshi/go-inovation/blob/master/mobile/ios/goinovation/ViewController.m).