diff --git a/content/docs/quickstart/contents.lr b/content/docs/quickstart/contents.lr
index 1e0eba30..7f8573ae 100644
--- a/content/docs/quickstart/contents.lr
+++ b/content/docs/quickstart/contents.lr
@@ -32,7 +32,7 @@ some basic configuration for you.
 If you want a video walkthrough you can have a look at the screencast which
 explains the quickstart project a bit:
 
-<iframe width="100%" height=410 frameborder="0" allowfullscreen="allowfullscreen"
+<iframe width="100%" height="410" frameborder="0" allowfullscreen="allowfullscreen"
   src="https://www.youtube.com/embed/lTWTCwuPdrU?autoplay=0&fs=1">
 </iframe>