diff --git a/src/test/ReactTestUtils.js b/src/test/ReactTestUtils.js
index feb4301e314a6..0993152da73ef 100644
--- a/src/test/ReactTestUtils.js
+++ b/src/test/ReactTestUtils.js
@@ -435,6 +435,7 @@ ReactShallowRenderer.prototype.render = function(element, context) {
   var transaction = ReactUpdates.ReactReconcileTransaction.getPooled(true);
   this._render(element, transaction, context);
   ReactUpdates.ReactReconcileTransaction.release(transaction);
+  return this;
 };
 
 ReactShallowRenderer.prototype.unmount = function() {