diff --git a/packages/@lwc/engine-core/src/framework/invoker.ts b/packages/@lwc/engine-core/src/framework/invoker.ts
index fa0877a514..8ebe2ccd86 100644
--- a/packages/@lwc/engine-core/src/framework/invoker.ts
+++ b/packages/@lwc/engine-core/src/framework/invoker.ts
@@ -58,7 +58,7 @@ export function invokeComponentConstructor(vm: VM, Ctor: LightningElementConstru
         // the "instanceof" operator would not work here since Locker Service provides its own
         // implementation of LightningElement, so we indirectly check if the base constructor is
         // invoked by accessing the component on the vm.
-        const isInvalidConstructor = lwcRuntimeFlags.ENABLE_LEGACY_LOCKER_SUPPORT
+        const isInvalidConstructor = lwcRuntimeFlags.LEGACY_LOCKER_ENABLED
             ? vmBeingConstructed.component !== result
             : !(result instanceof LightningElement);
 
diff --git a/packages/@lwc/features/src/index.ts b/packages/@lwc/features/src/index.ts
index d85e8276ca..c3f454830c 100644
--- a/packages/@lwc/features/src/index.ts
+++ b/packages/@lwc/features/src/index.ts
@@ -20,7 +20,7 @@ const features: FeatureFlagMap = {
     ENABLE_FORCE_SHADOW_MIGRATE_MODE: null,
     ENABLE_EXPERIMENTAL_SIGNALS: null,
     DISABLE_SYNTHETIC_SHADOW: null,
-    ENABLE_LEGACY_LOCKER_SUPPORT: null,
+    LEGACY_LOCKER_ENABLED: null,
 };
 
 if (!(globalThis as any).lwcRuntimeFlags) {
diff --git a/packages/@lwc/features/src/types.ts b/packages/@lwc/features/src/types.ts
index a2f148d73e..61c58b985d 100644
--- a/packages/@lwc/features/src/types.ts
+++ b/packages/@lwc/features/src/types.ts
@@ -80,7 +80,7 @@ export interface FeatureFlagMap {
      * If true, then lightning legacy locker is supported, otherwise lightning legacy locker will not function
      * properly.
      */
-    ENABLE_LEGACY_LOCKER_SUPPORT: FeatureFlagValue;
+    LEGACY_LOCKER_ENABLED: FeatureFlagValue;
 }
 
 export type FeatureFlagName = keyof FeatureFlagMap;
diff --git a/packages/@lwc/integration-karma/test/api/createElement/index.spec.js b/packages/@lwc/integration-karma/test/api/createElement/index.spec.js
index a9beeab9d6..54c3b8f6e8 100644
--- a/packages/@lwc/integration-karma/test/api/createElement/index.spec.js
+++ b/packages/@lwc/integration-karma/test/api/createElement/index.spec.js
@@ -98,10 +98,10 @@ describe.runIf(process.env.NATIVE_SHADOW)('native shadow', () => {
 
 describe('locker integration', () => {
     beforeEach(() => {
-        setFeatureFlagForTest('ENABLE_LEGACY_LOCKER_SUPPORT', true);
+        setFeatureFlagForTest('LEGACY_LOCKER_ENABLED', true);
     });
     afterEach(() => {
-        setFeatureFlagForTest('ENABLE_LEGACY_LOCKER_SUPPORT', false);
+        setFeatureFlagForTest('LEGACY_LOCKER_ENABLED', false);
     });
     it('should support component class that extend a mirror of the LightningElement', () => {
         function SecureBaseClass() {
diff --git a/packages/@lwc/integration-karma/test/integrations/locker/index.spec.js b/packages/@lwc/integration-karma/test/integrations/locker/index.spec.js
index 131135afac..e1da1fd055 100644
--- a/packages/@lwc/integration-karma/test/integrations/locker/index.spec.js
+++ b/packages/@lwc/integration-karma/test/integrations/locker/index.spec.js
@@ -4,10 +4,10 @@ import LockerIntegration from 'x/lockerIntegration';
 import LockerLiveComponent from 'x/lockerLiveComponent';
 import LockerHooks, { hooks } from 'x/lockerHooks';
 beforeEach(() => {
-    setFeatureFlagForTest('ENABLE_LEGACY_LOCKER_SUPPORT', true);
+    setFeatureFlagForTest('LEGACY_LOCKER_ENABLED', true);
 });
 afterEach(() => {
-    setFeatureFlagForTest('ENABLE_LEGACY_LOCKER_SUPPORT', false);
+    setFeatureFlagForTest('LEGACY_LOCKER_ENABLED', false);
 });
 it('should support Locker integration which uses a wrapped LightningElement base class', () => {
     const elm = createElement('x-secure-parent', { is: LockerIntegration });