diff --git a/docs/data/material/customization/how-to-customize/how-to-customize.md b/docs/data/material/customization/how-to-customize/how-to-customize.md
index 3894dcac502ff2..3c8ca0448b916a 100644
--- a/docs/data/material/customization/how-to-customize/how-to-customize.md
+++ b/docs/data/material/customization/how-to-customize/how-to-customize.md
@@ -25,7 +25,7 @@ It can be used with all Material UI components.
 
 {{"demo": "SxProp.js" }}
 
-#### Overriding nested component styles
+### Overriding nested component styles
 
 To customize a specific part of a component, you can use the class name provided by Material UI inside the `sx` prop. As an example, let's say you want to change the `Slider` component's thumb from a circle to a square.