diff --git a/lib/Page.js b/lib/Page.js
index eb06dfa0..a964c895 100644
--- a/lib/Page.js
+++ b/lib/Page.js
@@ -248,7 +248,7 @@ class Page extends EventEmitter {
    * @return {!Promise}
    */
   async setContent(html) {
-    this.evaluate((html) => {
+    this.evaluate(html => {
       document.open();
       document.write(html);
       document.close();