diff --git a/layouts/_default/_markup/render-codeblock-math.html b/layouts/_default/_markup/render-codeblock-math.html
index b484334def..149a1ae188 100644
--- a/layouts/_default/_markup/render-codeblock-math.html
+++ b/layouts/_default/_markup/render-codeblock-math.html
@@ -1,3 +1,3 @@
-<p>```math
+<p>$$
 {{ .Inner | safeHTML }}
-```</p>
+$$</p>
diff --git a/userguide/content/en/docs/Adding content/diagrams-and-formulae/index.md b/userguide/content/en/docs/Adding content/diagrams-and-formulae/index.md
index c4b1a09f51..ffa18033a2 100644
--- a/userguide/content/en/docs/Adding content/diagrams-and-formulae/index.md	
+++ b/userguide/content/en/docs/Adding content/diagrams-and-formulae/index.md	
@@ -93,10 +93,6 @@ errorColor = "#CD5C5C"
   left = "\\["
   right = '\\]'
   display = true
-[[params.katex.options.delimiters]]
-  left = "```math"
-  right = '```'
-  display = true
 ```
 
 For a complete list of options and their detailed description, have a look at the documentation of \\({\KaTeX}'s\\) [Rendering API options](https://katex.org/docs/autorender.html#api) and of \\({\KaTeX}'s\\) [configuration options](https://katex.org/docs/options.html).