diff --git a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
index 9d5dccc464fa5..b542bbb10a1ab 100644
--- a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
+++ b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
@@ -32,6 +32,7 @@ export const useModernStrictMode = __VARIANT__;
 export const enableRefAsProp = __VARIANT__;
 export const enableNewBooleanProps = __VARIANT__;
 export const enableRetryLaneExpiration = __VARIANT__;
+export const favorSafetyOverHydrationPerf = __VARIANT__;
 export const retryLaneExpirationMs = 5000;
 export const syncLaneExpirationMs = 250;
 export const transitionLaneExpirationMs = 5000;
diff --git a/packages/shared/forks/ReactFeatureFlags.www.js b/packages/shared/forks/ReactFeatureFlags.www.js
index 24b43e1157c4b..92c3eb0b38653 100644
--- a/packages/shared/forks/ReactFeatureFlags.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.www.js
@@ -39,6 +39,7 @@ export const {
   useModernStrictMode,
   enableRefAsProp,
   enableNewBooleanProps,
+  favorSafetyOverHydrationPerf,
 } = dynamicFeatureFlags;
 
 // On WWW, __EXPERIMENTAL__ is used for a new modern build.
@@ -60,8 +61,6 @@ export const enableUseEffectEventHook = true;
 export const enableFilterEmptyStringAttributesDOM = true;
 export const enableAsyncActions = true;
 
-export const favorSafetyOverHydrationPerf = false;
-
 // Logs additional User Timing API marks for use with an experimental profiling tool.
 export const enableSchedulingProfiler: boolean =
   __PROFILE__ && dynamicFeatureFlags.enableSchedulingProfiler;