diff --git a/themes/vanilla/layouts/shortcodes/codelines.html b/themes/vanilla/layouts/shortcodes/codelines.html
index 8e16d5c..6d066f3 100644
--- a/themes/vanilla/layouts/shortcodes/codelines.html
+++ b/themes/vanilla/layouts/shortcodes/codelines.html
@@ -14,5 +14,5 @@
 <div class="highlight-group">
     <div class="highlight-label">From <a href="https://dev.danilafe.com/Web-Projects/blog-static/src/branch/master/code/{{ .Get 1 }}">{{ path.Base (.Get 1) }}</a>,
         {{ if eq (.Get 2) (.Get 3) }}line {{ .Get 2 }}{{ else }} lines {{ .Get 2 }} through {{ .Get 3 }}{{ end }}</div>
-    {{ highlight (delimit $v "\n") (.Get 0) (printf "linenos=table,linenostart=%d%s" (.Get 2) (.Scratch.Get "opts")) }}
+    {{ highlight (htmlEscape (delimit $v "\n")) (.Get 0) (printf "linenos=table,linenostart=%d%s" (.Get 2) (.Scratch.Get "opts")) }}
 </div>