diff --git a/config.toml b/config.toml
index 24cf851..ead432c 100644
--- a/config.toml
+++ b/config.toml
@@ -1,4 +1,4 @@
 [params]
-katexCssUrl = "https://static.danilafe.com/katex/katex.min.css"
+katexCssUrl = "//static.danilafe.com/katex/katex.min.css"
 plausibleAnalyticsDomain = "danilafe.com"
 siteSourceUrl = "https://dev.danilafe.com/Web-Projects/blog-static/src/branch/master"