diff --git a/README.md b/README.md
index 8de8d480..7476d683 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ A few notes:
 
 1. By default, Puppeteer runs a bundled Chromium browser. However, you can point Puppeteer to a different executable ([example](https://github.com/GoogleChrome/puppeteer/blob/master/examples/custom-chromium-revision.js))
 2. Puppeteer creates its own Chromium user profile which it cleans up on every run.
-3. Puppeteer sets an initial page size to 400px x 300px, which defines the screenshot size. The page size can be changed with `Page.setSize()` method
+3. Puppeteer sets an initial page size to 400px x 300px, which defines the screenshot size. The page size can be changed with `Page.setViewportSize()` method
 
 ## API