diff --git a/sections/advanced/existing-css.mdx b/sections/advanced/existing-css.mdx
index 5b3fadfc..81f9ebd3 100644
--- a/sections/advanced/existing-css.mdx
+++ b/sections/advanced/existing-css.mdx
@@ -11,7 +11,7 @@ It injects the generated stylesheet at the end of the head of the document durin
 
 If you use the `styled(MyComponent)` notation and `MyComponent` does not
 render the passed-in `className` prop, then no styles will be applied.
-To avoid this issue, make sure your component attaches the passed-in className to a DOM node:
+To avoid this issue, make sure your component attaches the passed-in `className` to a DOM node:
 
 ```tsx
 class MyComponent extends React.Component {