diff --git a/static/styles/night_mode.scss b/static/styles/night_mode.scss
index 6538540bf4..00030092d3 100644
--- a/static/styles/night_mode.scss
+++ b/static/styles/night_mode.scss
@@ -484,6 +484,7 @@ on a dark background, and don't change the dark labels dark either. */
     #feedback_container,
     .message_content code,
     .message_edit_content code,
+    #preview_content code,
     #settings_page code,
     .typeahead.dropdown-menu {
         background-color: hsl(212, 25%, 15%);