diff --git a/src/courseware/sequence/Unit.jsx b/src/courseware/sequence/Unit.jsx
index 53b34118..39676336 100644
--- a/src/courseware/sequence/Unit.jsx
+++ b/src/courseware/sequence/Unit.jsx
@@ -12,6 +12,7 @@ export default function Unit({ id, pageTitle }) {
       title={pageTitle}
       ref={iframeRef}
       src={iframeUrl}
+      allowFullScreen
     />
   );
 }