diff --git a/packages/react-dom/src/__tests__/ReactTestUtils-test.js b/packages/react-dom/src/__tests__/ReactTestUtils-test.js
index a8f1b69f58a12..ff5043020cd08 100644
--- a/packages/react-dom/src/__tests__/ReactTestUtils-test.js
+++ b/packages/react-dom/src/__tests__/ReactTestUtils-test.js
@@ -429,6 +429,34 @@ describe('ReactTestUtils', () => {
         jasmine.objectContaining({target: input}),
       );
     });
+
+    it('should set the correct event type when simulating synthetic events', () => {
+      expect.assertions(1);
+
+      let handler = function(event) {
+        expect(event.nativeEvent.type).toEqual('click');
+      };
+
+      let button = ReactTestUtils.renderIntoDocument(
+        <button onClick={handler} />,
+      );
+
+      ReactTestUtils.Simulate.click(button);
+    });
+
+    it('should set the correct event type when simulating native events', () => {
+      expect.assertions(1);
+
+      let handler = function(event) {
+        expect(event.nativeEvent.type).toEqual('click');
+      };
+
+      let button = ReactTestUtils.renderIntoDocument(
+        <button onClick={handler} />,
+      );
+
+      ReactTestUtils.SimulateNative.click(button);
+    });
   });
 
   it('should call setState callback with no arguments', () => {
diff --git a/packages/react-dom/src/test-utils/ReactTestUtils.js b/packages/react-dom/src/test-utils/ReactTestUtils.js
index 355daad055365..166ae362c845a 100644
--- a/packages/react-dom/src/test-utils/ReactTestUtils.js
+++ b/packages/react-dom/src/test-utils/ReactTestUtils.js
@@ -32,7 +32,9 @@ var {
 
 var topLevelTypes = BrowserEventConstants.topLevelTypes;
 
-function Event(suffix) {}
+function FakeNativeEvent(type) {
+  this.type = type;
+}
 
 /**
  * @class ReactTestUtils
@@ -359,9 +361,8 @@ function makeSimulator(eventType) {
     var dispatchConfig =
       EventPluginRegistry.eventNameDispatchConfigs[eventType];
 
-    var fakeNativeEvent = new Event();
+    var fakeNativeEvent = new FakeNativeEvent(eventType.toLowerCase());
     fakeNativeEvent.target = domNode;
-    fakeNativeEvent.type = eventType.toLowerCase();
 
     // We don't use SyntheticEvent.getPooled in order to not have to worry about
     // properly destroying any properties assigned from `eventData` upon release
@@ -438,20 +439,21 @@ buildSimulators();
  * to dispatch synthetic events.
  */
 
-function makeNativeSimulator(eventType) {
+function makeNativeSimulator(topLevelType) {
   return function(domComponentOrNode, nativeEventData) {
-    var fakeNativeEvent = new Event(eventType);
+    var eventType = topLevelTypes[topLevelType];
+    var fakeNativeEvent = new FakeNativeEvent(eventType);
     Object.assign(fakeNativeEvent, nativeEventData);
     if (ReactTestUtils.isDOMComponent(domComponentOrNode)) {
       ReactTestUtils.simulateNativeEventOnDOMComponent(
-        eventType,
+        topLevelType,
         domComponentOrNode,
         fakeNativeEvent,
       );
     } else if (domComponentOrNode.tagName) {
       // Will allow on actual dom nodes.
       ReactTestUtils.simulateNativeEventOnNode(
-        eventType,
+        topLevelType,
         domComponentOrNode,
         fakeNativeEvent,
       );