diff --git a/app/soapbox/features/preferences/index.js b/app/soapbox/features/preferences/index.js
index b5360808d..dd1072c49 100644
--- a/app/soapbox/features/preferences/index.js
+++ b/app/soapbox/features/preferences/index.js
@@ -182,6 +182,7 @@ class Preferences extends ImmutablePureComponent {
               />
               <RadioItem
                 label={<FormattedMessage id='preferences.options.content_type_markdown' defaultMessage='Markdown' />}
+                hint={<FormattedMessage id='preferences.hints.content_type_markdown' defaultMessage='Warning: experimental!' />}
                 checked={settings.get('defaultContentType') === 'text/markdown'}
                 value='text/markdown'
               />