diff --git a/docs/api.md b/docs/api.md
index 3200c44d..e98eecc0 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -1121,7 +1121,7 @@ puppeteer.launch().then(async browser => {
   const page = await browser.newPage();
   await page.setRequestInterception(true);
   page.on('request', interceptedRequest => {
-    if (interceptedRequest.url.endsWith('.png') || interceptedRequest.url.endsWith('.jpg'))
+    if (interceptedRequest.url().endsWith('.png') || interceptedRequest.url().endsWith('.jpg'))
       interceptedRequest.abort();
     else
       interceptedRequest.continue();