diff --git a/packages/mui-material/src/ButtonGroup/ButtonGroup.js b/packages/mui-material/src/ButtonGroup/ButtonGroup.js
index 4e63d0accda3a2..bed6b946a25d5e 100644
--- a/packages/mui-material/src/ButtonGroup/ButtonGroup.js
+++ b/packages/mui-material/src/ButtonGroup/ButtonGroup.js
@@ -256,7 +256,7 @@ const ButtonGroup = React.forwardRef(function ButtonGroup(inProps, ref) {
     ],
   );
 
-  const addButtonGroupButtonContextPositionClassName = (index, childrenParam) => {
+  const getButtonPositionClassName = (index, childrenParam) => {
     const isFirstButton = index === 0;
     const isLastButton = index === React.Children.count(childrenParam) - 1;
 
@@ -289,7 +289,7 @@ const ButtonGroup = React.forwardRef(function ButtonGroup(inProps, ref) {
 
           return (
             <ButtonGroupButtonContext.Provider
-              value={addButtonGroupButtonContextPositionClassName(index, children)}
+              value={getButtonPositionClassName(index, children)}
             >
               {child}
             </ButtonGroupButtonContext.Provider>
diff --git a/packages/mui-material/src/ButtonGroup/ButtonGroupButtonContext.ts b/packages/mui-material/src/ButtonGroup/ButtonGroupButtonContext.ts
index 18f4c4c7e13407..8a93fe171954ef 100644
--- a/packages/mui-material/src/ButtonGroup/ButtonGroupButtonContext.ts
+++ b/packages/mui-material/src/ButtonGroup/ButtonGroupButtonContext.ts
@@ -1,13 +1,13 @@
 import * as React from 'react';
 
-type ButtonGroupButtonContextClassNameValue = string;
+type ButtonPositionClassName = string;
 
 /**
  * @ignore - internal component.
  */
-const ButtonGroupButtonContext = React.createContext<
-  ButtonGroupButtonContextClassNameValue | undefined
->(undefined);
+const ButtonGroupButtonContext = React.createContext<ButtonPositionClassName | undefined>(
+  undefined,
+);
 
 if (process.env.NODE_ENV !== 'production') {
   ButtonGroupButtonContext.displayName = 'ButtonGroupButtonContext';