diff --git a/website/docs/guides/markdown-features/markdown-features-react.mdx b/website/docs/guides/markdown-features/markdown-features-react.mdx
index be6f0018fa..08530fd72e 100644
--- a/website/docs/guides/markdown-features/markdown-features-react.mdx
+++ b/website/docs/guides/markdown-features/markdown-features-react.mdx
@@ -352,7 +352,7 @@ Now you can import code snippets from another file as it is:
 import CodeBlock from '@theme/CodeBlock';
 import MyComponentSource from '!!raw-loader!./myComponent';
 
-<CodeBlock className="language-jsx">{MyComponentSource}</CodeBlock>
+<CodeBlock language="jsx">{MyComponentSource}</CodeBlock>
 ```
 <!-- prettier-ignore-end -->
 
@@ -362,7 +362,7 @@ import MyComponentSource from '!!raw-loader!@site/src/pages/examples/_myComponen
 
 <BrowserWindow>
 
-<CodeBlock className="language-jsx">{MyComponentSource}</CodeBlock>
+<CodeBlock language="jsx">{MyComponentSource}</CodeBlock>
 
 </BrowserWindow>