diff --git a/packages/x-tree-view/src/internals/index.ts b/packages/x-tree-view/src/internals/index.ts
index fa8077673775e..515113988bab3 100644
--- a/packages/x-tree-view/src/internals/index.ts
+++ b/packages/x-tree-view/src/internals/index.ts
@@ -66,4 +66,3 @@ export type {
 } from './plugins/useTreeViewJSXItems';
 
 export { isTargetInDescendants } from './utils/tree';
-export { warnOnce } from './utils/warning';