diff --git a/themes/mytheme/layouts/partials/header.html b/themes/mytheme/layouts/partials/header.html
index 44e8587..f6c6c7c 100644
--- a/themes/mytheme/layouts/partials/header.html
+++ b/themes/mytheme/layouts/partials/header.html
@@ -39,7 +39,7 @@
 </script>
 {{- end }}
 
-{{ if .Params.math }}
+{{ if or .Params.math true}}
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js" onload="renderMathInElement(document.body);"></script>