diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index ae1b0279..e814cf82 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -528,8 +528,8 @@ jobs:
         cp -rf luci-app-bypass/root/www/luci-static/bypass/* luci-app-passwall2/root/www/luci-static/passwall2/
         cp -rf luci-app-bypass/root/www/luci-static/bypass/* luci-app-ssr-plus/root/www/luci-static/shadowsocksr/
         echo ".page-container>div>div>a:first-child,.info_content>.status_box{display:none !important}" >>luci-app-quickstart/htdocs/luci-static/quickstart/style.css
-        sed -i -e "s/body[theme=dark]/:root[data-darkmode=true]/g" \
-         -e "s/body[theme=light]/:root[data-darkmode=false]/g" luci-app-quickstart/htdocs/luci-static/quickstart/style.css
+        sed -i -e "s/body\[theme=dark\]/:root[data-darkmode=true]/g" \
+         -e "s/body\[theme=light\]/:root[data-darkmode=false]/g" luci-app-quickstart/htdocs/luci-static/quickstart/style.css
         sed -i 's/body.getAttribute("theme");if(o)switch(o){case"dark":case"light":return o}/documentElement.getAttribute("data-darkmode");if(o)switch(o){case"true":return"dark";case"false":return"light"}/g' luci-app-quickstart/htdocs/luci-static/quickstart/index.js
         sed -i 's/icon!=="baby"/icon!==""/' luci-app-quickstart/htdocs/luci-static/quickstart/index.js
         sed -i 's/+php8-cgi /+php8-cgi +php8-fpm /' luci-theme-spectra/Makefile