diff --git a/src/CollapsibleMixin.js b/src/CollapsibleMixin.js
index 505b62909d..47a8f6b200 100644
--- a/src/CollapsibleMixin.js
+++ b/src/CollapsibleMixin.js
@@ -1,5 +1,5 @@
 import React from 'react';
-import TransitionEvents from 'react/lib/ReactTransitionEvents';
+import TransitionEvents from './utils/TransitionEvents';
 import deprecationWarning from './utils/deprecationWarning';
 
 const CollapsibleMixin = {