diff --git a/src/isomorphic/React.js b/src/isomorphic/React.js
index 551e0a608b..37109d6ea1 100644
--- a/src/isomorphic/React.js
+++ b/src/isomorphic/React.js
@@ -65,6 +65,9 @@ var React = {
   DOM: ReactDOMFactories,
 
   version: ReactVersion,
+
+  // Hook for JSX spread, don't use this for anything else.
+  __spread: Object.assign,
 };
 
 module.exports = React;