diff --git a/extensions/amp-youtube/0.1/test/test-amp-youtube.js b/extensions/amp-youtube/0.1/test/test-amp-youtube.js
index e96234719d8d..375fe45fecbb 100644
--- a/extensions/amp-youtube/0.1/test/test-amp-youtube.js
+++ b/extensions/amp-youtube/0.1/test/test-amp-youtube.js
@@ -104,7 +104,7 @@ describes.realWin('amp-youtube', {
       }).then(yt => {
         const iframe = yt.querySelector('iframe');
         expect(iframe.src).to.contain('myParam=hello%20world');
-        // data-param-autoplay is black listed in favour of just autoplay
+        // data-param-autoplay is black listed in favor of just autoplay
         expect(iframe.src).to.not.contain('autoplay=1');
         // playsinline should default to 1 if not provided.
         expect(iframe.src).to.contain('playsinline=1');