diff --git a/experimental/puppeteer-firefox/lib/DOMWorld.js b/experimental/puppeteer-firefox/lib/DOMWorld.js
index 8d50da02..12cfc67d 100644
--- a/experimental/puppeteer-firefox/lib/DOMWorld.js
+++ b/experimental/puppeteer-firefox/lib/DOMWorld.js
@@ -134,7 +134,7 @@ class DOMWorld {
   async setContent(html) {
     await this.evaluate(base64html => {
       document.open();
-      document.write(atob(base64html));
+      document.write(decodeURIComponent(atob(base64html).split('').map(c => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)).join('')));
       document.close();
     }, Buffer.from(html).toString('base64'));
   }
diff --git a/lib/DOMWorld.js b/lib/DOMWorld.js
index 503df690..0a0210fe 100644
--- a/lib/DOMWorld.js
+++ b/lib/DOMWorld.js
@@ -205,7 +205,7 @@ class DOMWorld {
     // lifecycle event. @see https://crrev.com/608658
     await this.evaluate(base64html => {
       document.open();
-      document.write(atob(base64html));
+      document.write(decodeURIComponent(atob(base64html).split('').map(c => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)).join('')));
       document.close();
     }, Buffer.from(html).toString('base64'));
     const watcher = new LifecycleWatcher(this._frameManager, this._frame, waitUntil, timeout);
diff --git a/test/page.spec.js b/test/page.spec.js
index cf78ce1c..bc2a065d 100644
--- a/test/page.spec.js
+++ b/test/page.spec.js
@@ -760,6 +760,18 @@ module.exports.addTests = function({testRunner, expect, headless, puppeteer, CHR
       await page.setContent('<div>hello world</div>' + '\x7F');
       expect(await page.$eval('div', div => div.textContent)).toBe('hello world');
     });
+    it('should work with accents', async({page, server}) => {
+      await page.setContent('<div>aberración</div>');
+      expect(await page.$eval('div', div => div.textContent)).toBe('aberración');
+    });
+    it('should work with emojis', async({page, server}) => {
+      await page.setContent('<div>🐥</div>');
+      expect(await page.$eval('div', div => div.textContent)).toBe('🐥');
+    });
+    it('should work with newline', async({page, server}) => {
+      await page.setContent('<div>\n</div>');
+      expect(await page.$eval('div', div => div.textContent)).toBe('\n');
+    });
   });
 
   describe_fails_ffox('Page.setBypassCSP', function() {