diff --git a/src/browser/__tests__/ReactBrowserEventEmitter-test.js b/src/browser/__tests__/ReactBrowserEventEmitter-test.js
index 774bb1313a..30ff4e03e3 100644
--- a/src/browser/__tests__/ReactBrowserEventEmitter-test.js
+++ b/src/browser/__tests__/ReactBrowserEventEmitter-test.js
@@ -275,8 +275,8 @@ describe('ReactBrowserEventEmitter', function() {
     expect(idCallOrder[0]).toBe(getID(CHILD));
     expect(console.warn.calls.length).toEqual(1);
     expect(console.warn.calls[0].args[0]).toBe(
-      'Returning `false` from an event handler is deprecated and will ' +
-      'be ignored in a future release. Instead, manually call ' +
+      'Warning: Returning `false` from an event handler is deprecated and ' +
+      'will be ignored in a future release. Instead, manually call ' +
       'e.stopPropagation() or e.preventDefault(), as appropriate.'
     );
   });
diff --git a/src/browser/eventPlugins/SimpleEventPlugin.js b/src/browser/eventPlugins/SimpleEventPlugin.js
index e1666ab0fe..3c933267b4 100644
--- a/src/browser/eventPlugins/SimpleEventPlugin.js
+++ b/src/browser/eventPlugins/SimpleEventPlugin.js
@@ -35,6 +35,7 @@ var getEventCharCode = require('getEventCharCode');
 
 var invariant = require('invariant');
 var keyOf = require('keyOf');
+var warning = require('warning');
 
 var topLevelTypes = EventConstants.topLevelTypes;
 
@@ -309,15 +310,13 @@ var SimpleEventPlugin = {
    */
   executeDispatch: function(event, listener, domID) {
     var returnValue = EventPluginUtils.executeDispatch(event, listener, domID);
-    if (__DEV__) {
-      if (typeof returnValue === 'boolean') {
-        console.warn(
-          'Returning `false` from an event handler is deprecated and will ' +
-          'be ignored in a future release. Instead, manually call ' +
-          'e.stopPropagation() or e.preventDefault(), as appropriate.'
-        );
-      }
-    }
+
+    warning(
+      typeof returnValue !== 'boolean',
+      'Returning `false` from an event handler is deprecated and will be ' +
+      'ignored in a future release. Instead, manually call ' +
+      'e.stopPropagation() or e.preventDefault(), as appropriate.'
+    );
 
     if (returnValue === false) {
       event.stopPropagation();