diff --git a/app/javascript/flavours/glitch/features/ui/components/embed_modal.js b/app/javascript/flavours/glitch/features/ui/components/embed_modal.js
index f3553f4a9..bf29b0da5 100644
--- a/app/javascript/flavours/glitch/features/ui/components/embed_modal.js
+++ b/app/javascript/flavours/glitch/features/ui/components/embed_modal.js
@@ -74,6 +74,7 @@ export default class EmbedModal extends ImmutablePureComponent {
             className='embed-modal__iframe'
             frameBorder='0'
             ref={this.setIframeRef}
+            sandbox='allow-same-origin'
             title='preview'
           />
         </div>