diff --git a/layouts/partials/header/styles-highlight.html b/layouts/partials/header/styles-highlight.html
index 546c767..6258561 100644
--- a/layouts/partials/header/styles-highlight.html
+++ b/layouts/partials/header/styles-highlight.html
@@ -1,7 +1,9 @@
 {{ if .Site.Params.highlightjs }}
+{{ if or (not (isset .Params "highlight")) (.Params.highlight) }}
 <!-- highlightjs -->
 <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/{{ .Site.Params.highlightjsstyle | default "default" }}.min.css">
 {{ end }}
+{{ end }}
 {{ if .Site.Params.PygmentsUseClasses }}
 <!-- Pygments Syntax -->
 +<link rel="stylesheet" href="{{ "css/syntax.min.css" | relURL }}">
diff --git a/layouts/partials/highlight-js.html b/layouts/partials/highlight-js.html
index 0606d79..c8cafd7 100644
--- a/layouts/partials/highlight-js.html
+++ b/layouts/partials/highlight-js.html
@@ -1,5 +1,5 @@
 {{ if .Site.Params.highlightjs }}
-    {{ if or (not (isset .Params "highlight")) (not .Params.highlight) }}
+    {{ if or (not (isset .Params "highlight")) (.Params.highlight) }}
         {{ $hl := newScratch }}
         {{ $hl.Set "languages" (union (.Site.Params.highlightjslanguages) (.Params.highlightjslanguages)) }}
         <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>