diff --git a/src/core/ReactPropTransferer.js b/src/core/ReactPropTransferer.js
index 003213ff1887..1242887d5d10 100644
--- a/src/core/ReactPropTransferer.js
+++ b/src/core/ReactPropTransferer.js
@@ -52,6 +52,10 @@ var TransferStrategies = {
    * Transfer the `className` prop by merging them.
    */
   className: createTransferStrategy(joinClasses),
+  /**
+   * Never transfer the `key` prop.
+   */
+  key: emptyFunction,
   /**
    * Never transfer the `ref` prop.
    */