diff --git a/packages/mui-material-next/src/InputBase/InputBase.test.tsx b/packages/mui-material-next/src/InputBase/InputBase.test.tsx
index 9211552d31bd9e..c183219600c51f 100644
--- a/packages/mui-material-next/src/InputBase/InputBase.test.tsx
+++ b/packages/mui-material-next/src/InputBase/InputBase.test.tsx
@@ -247,7 +247,8 @@ describe('<InputBase />', () => {
     });
 
     it('should inject onBlur and onFocus', () => {
-      let injectedProps: any = {};
+      let injectedProps: Record<string, unknown> = {};
+
       const MyInputBase = React.forwardRef(function MyInputBase(
         props: { ownerState: InputBaseOwnerState } & Record<string, unknown>,
         ref: React.ForwardedRef<HTMLInputElement>,
@@ -259,10 +260,8 @@ describe('<InputBase />', () => {
 
       render(<InputBase inputComponent={MyInputBase} />);
 
-      if (injectedProps) {
-        expect(typeof injectedProps.onBlur).to.equal('function');
-        expect(typeof injectedProps.onFocus).to.equal('function');
-      }
+      expect(typeof injectedProps.onBlur).to.equal('function');
+      expect(typeof injectedProps.onFocus).to.equal('function');
     });
 
     describe('target mock implementations', () => {
diff --git a/packages/mui-material-next/src/InputBase/InputBase.tsx b/packages/mui-material-next/src/InputBase/InputBase.tsx
index 5121732480ba62..e5c01f9fc20a32 100644
--- a/packages/mui-material-next/src/InputBase/InputBase.tsx
+++ b/packages/mui-material-next/src/InputBase/InputBase.tsx
@@ -319,7 +319,7 @@ const InputBase = React.forwardRef(function InputBase<
   const onFilled = muiFormControl && muiFormControl.onFilled;
   const onEmpty = muiFormControl && muiFormControl.onEmpty;
 
-  // TODO: needs material-next/Outlined|FilledInput
+  // TODO: needs material-next/OutlinedInput
   const checkDirty = React.useCallback(
     (obj: any) => {
       if (isFilled(obj)) {