diff --git a/packages/mui-material-next/src/FilledInput/FilledInput.tsx b/packages/mui-material-next/src/FilledInput/FilledInput.tsx
index 5d9c06f96ce199..faac77581131a5 100644
--- a/packages/mui-material-next/src/FilledInput/FilledInput.tsx
+++ b/packages/mui-material-next/src/FilledInput/FilledInput.tsx
@@ -3,7 +3,7 @@ import * as React from 'react';
 import { refType } from '@mui/utils';
 import PropTypes from 'prop-types';
 import { unstable_composeClasses as composeClasses, useSlotProps } from '@mui/base';
-import { DefaultComponentProps, OverrideProps } from '@mui/types';
+import { OverrideProps } from '@mui/types';
 import InputBase, {
   rootOverridesResolver as inputBaseRootOverridesResolver,
   inputOverridesResolver as inputBaseInputOverridesResolver,
diff --git a/packages/mui-material-next/src/FilledInput/index.js b/packages/mui-material-next/src/FilledInput/index.ts
similarity index 100%
rename from packages/mui-material-next/src/FilledInput/index.js
rename to packages/mui-material-next/src/FilledInput/index.ts