diff --git a/resources/toc.js b/resources/toc.js
index 86ff2af2e6..b9ac1d99bc 100644
--- a/resources/toc.js
+++ b/resources/toc.js
@@ -67,7 +67,7 @@
         if (settings.is_dark_theme) { css += dark_css; }
         var style = document.createElement('style');
         style.textContent = css;
-        document.body.appendChild(style);
+        document.documentElement.appendChild(style);
     }
 
     apply_body_colors();