diff --git a/app/javascript/mastodon/features/ui/index.jsx b/app/javascript/mastodon/features/ui/index.jsx
index a420279ca40..0583bf99c5e 100644
--- a/app/javascript/mastodon/features/ui/index.jsx
+++ b/app/javascript/mastodon/features/ui/index.jsx
@@ -92,7 +92,7 @@ const messages = defineMessages({
 const mapStateToProps = state => ({
   layout: state.getIn(['meta', 'layout']),
   isComposing: state.getIn(['compose', 'is_composing']),
-  hasComposingContents: state.getIn(['compose', 'text']).trim().length !== 0 || state.getIn(['compose', 'media_attachments']).size > 0 || state.getIn(['compose', 'poll']) !== null,
+  hasComposingContents: state.getIn(['compose', 'text']).trim().length !== 0 || state.getIn(['compose', 'media_attachments']).size > 0 || state.getIn(['compose', 'poll']) !== null || state.getIn(['compose', 'quoted_status_id']) !== null,
   canUploadMore: !state.getIn(['compose', 'media_attachments']).some(x => ['audio', 'video'].includes(x.get('type'))) && state.getIn(['compose', 'media_attachments']).size < state.getIn(['server', 'server', 'configuration', 'statuses', 'max_media_attachments']),
   firstLaunch: state.getIn(['settings', 'introductionVersion'], 0) < INTRODUCTION_VERSION,
   newAccount: !state.getIn(['accounts', me, 'note']) && !state.getIn(['accounts', me, 'bot']) && state.getIn(['accounts', me, 'following_count'], 0) === 0 && state.getIn(['accounts', me, 'statuses_count'], 0) === 0,