diff --git a/includes/Constants.php b/includes/Constants.php
index 469c67eb..df8a09f8 100644
--- a/includes/Constants.php
+++ b/includes/Constants.php
@@ -198,12 +198,12 @@ final class Constants {
 	/**
 	 * @var string
 	 */
-	public const FEATURE_TABLE_OF_CONTENTS = 'TableOfContents';
+	public const FEATURE_TABLE_OF_CONTENTS_AB_TEST = 'TableOfContentsLegacyTOC';
 
 	/**
 	 * @var string
 	 */
-	public const REQUIREMENT_TABLE_OF_CONTENTS = 'TableOfContents';
+	public const REQUIREMENT_TABLE_OF_CONTENTS_AB_TEST = 'TableOfContentsLegacy';
 
 	/**
 	 * @var string
diff --git a/includes/FeatureManagement/Requirements/TableOfContentsTreatmentRequirement.php b/includes/FeatureManagement/Requirements/TableOfContentsTreatmentRequirement.php
index 3342d57e..4aed8e68 100644
--- a/includes/FeatureManagement/Requirements/TableOfContentsTreatmentRequirement.php
+++ b/includes/FeatureManagement/Requirements/TableOfContentsTreatmentRequirement.php
@@ -52,7 +52,7 @@ final class TableOfContentsTreatmentRequirement implements Requirement {
 	 * @inheritDoc
 	 */
 	public function getName(): string {
-		return Constants::REQUIREMENT_TABLE_OF_CONTENTS;
+		return Constants::REQUIREMENT_TABLE_OF_CONTENTS_AB_TEST;
 	}
 
 	/**
diff --git a/includes/ServiceWiring.php b/includes/ServiceWiring.php
index c4be1308..649a5c6a 100644
--- a/includes/ServiceWiring.php
+++ b/includes/ServiceWiring.php
@@ -193,10 +193,10 @@ return [
 		);
 
 		$featureManager->registerFeature(
-			Constants::FEATURE_TABLE_OF_CONTENTS,
+			Constants::FEATURE_TABLE_OF_CONTENTS_AB_TEST,
 			[
 				Constants::REQUIREMENT_FULLY_INITIALISED,
-				Constants::REQUIREMENT_TABLE_OF_CONTENTS,
+				Constants::REQUIREMENT_TABLE_OF_CONTENTS_AB_TEST,
 			]
 		);
 
diff --git a/includes/SkinVector22.php b/includes/SkinVector22.php
index 1e22a7da..df39ee6d 100644
--- a/includes/SkinVector22.php
+++ b/includes/SkinVector22.php
@@ -45,7 +45,7 @@ class SkinVector22 extends SkinVector {
 	 */
 	public function isUserInTocTreatmentBucket(): bool {
 		$featureManager = VectorServices::getFeatureManager();
-		return $featureManager->isFeatureEnabled( Constants::FEATURE_TABLE_OF_CONTENTS );
+		return !$featureManager->isFeatureEnabled( Constants::FEATURE_TABLE_OF_CONTENTS_AB_TEST );
 	}
 
 	/**