diff --git a/source/css/_defines/theme.styl b/source/css/_defines/theme.styl
index 23a68df..24b4fea 100644
--- a/source/css/_defines/theme.styl
+++ b/source/css/_defines/theme.styl
@@ -30,7 +30,3 @@ if hexo-config('style.darkmode') == 'auto'
       --theme-bg: mix($color-theme, $dark-card, 10)
       @media screen and (max-width: $device-tablet)
         --site-bg: $dark-site-bg-mobile
-
-  @media (prefers-color-scheme: dark)
-    html
-      filter: brightness(80%) !important