diff --git a/content/post/nextcloud-caldav-error.md b/content/post/nextcloud-caldav-error.md
index cb78e98..69d603b 100644
--- a/content/post/nextcloud-caldav-error.md
+++ b/content/post/nextcloud-caldav-error.md
@@ -10,7 +10,7 @@ Unfortunately, out of the box, it wasn't working. I tried all sorts of suggestio
 
 Then, after a day of staring blankly at the problem, I suddenly realized what was wrong. There was a simple `regex` typo in the htaccess configuration that came from nextcloud. Let's see if you can see the difference. Here's what nextcloud gives you:
 
-``` 
+```xml-dtd
 <IfModule mod_rewrite.c>
   RewriteEngine on
   RewriteCond %{HTTP_USER_AGENT} DavClnt
@@ -27,7 +27,7 @@ Then, after a day of staring blankly at the problem, I suddenly realized what wa
 
 and here is what I ended up running successfully with:
 
-```
+```xml-dtd
 <IfModule mod_rewrite.c>
   RewriteEngine on
   RewriteCond %{HTTP_USER_AGENT} DavClnt