diff --git a/app/javascript/mastodon/features/ui/components/embed_modal.jsx b/app/javascript/mastodon/features/ui/components/embed_modal.jsx
index 3e0bcc93cb740..949c64042178b 100644
--- a/app/javascript/mastodon/features/ui/components/embed_modal.jsx
+++ b/app/javascript/mastodon/features/ui/components/embed_modal.jsx
@@ -85,7 +85,7 @@ class EmbedModal extends ImmutablePureComponent {
             className='embed-modal__iframe'
             frameBorder='0'
             ref={this.setIframeRef}
-            sandbox='allow-same-origin'
+            sandbox='allow-scripts allow-same-origin'
             title='preview'
           />
         </div>