diff --git a/doc/docinfo.html b/doc/docinfo.html
index 3331d2277..ded9ebc02 100644
--- a/doc/docinfo.html
+++ b/doc/docinfo.html
@@ -9,6 +9,7 @@
 @media (prefers-color-scheme: dark) {
   /* dark theme */
   :root {
+    color-scheme: dark;
     --body-bg-color: #1a1a1a;
     --body-color: #ddd;
     --body-font: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
@@ -40,6 +41,7 @@
 @media (not (prefers-color-scheme: dark)), (prefers-color-scheme: light)  {
   /* light theme */
   :root {
+    color-scheme: light;
     --body-bg-color: ##fff;
     --body-color: #353535;
     --body-font: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";