diff --git a/docs/src/components/showcase/ThemeSlider.tsx b/docs/src/components/showcase/ThemeSlider.tsx
index 5c5eca0bdbfa93..7bd5e2094cf7f3 100644
--- a/docs/src/components/showcase/ThemeSlider.tsx
+++ b/docs/src/components/showcase/ThemeSlider.tsx
@@ -70,7 +70,6 @@ export default function ThemeSlider() {
                 fontWeight: 'semiBold',
               },
               [`& .${sliderClasses.thumb}`]: {
-                mx: -1,
                 width: 16,
                 height: 16,
                 '&::before': {