diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
index 83b1ff0bbd..3f1f062aa6 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
@@ -12,6 +12,9 @@ import invariant from 'shared/invariant';
 import typeof * as FeatureFlagsType from 'shared/ReactFeatureFlags';
 import typeof * as PersistentFeatureFlagsType from './ReactFeatureFlags.persistent';
 
+// Re-export dynamic flags from the www version.
+export const {revertPassiveEffectsChange} = require('ReactFeatureFlags');
+
 export const debugRenderPhaseSideEffects = false;
 export const debugRenderPhaseSideEffectsForStrictMode = false;
 export const enableUserTimingAPI = __DEV__;
@@ -27,7 +30,6 @@ export const disableJavaScriptURLs = false;
 export const disableYielding = false;
 export const enableEventAPI = true;
 export const enableJSXTransformAPI = true;
-export const revertPassiveEffectsChange = false;
 
 // Only used in www builds.
 export function addUserTimingListener() {