diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index 18b61937d92d..defcc41e9358 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -133,6 +133,7 @@ public static class FeatureFlagKeys
     public const string NativeCreateAccountFlow = "native-create-account-flow";
     public const string AccountDeprovisioning = "pm-10308-account-deprovisioning";
     public const string NotificationBarAddLoginImprovements = "notification-bar-add-login-improvements";
+    public const string BlockBrowserInjectionsByDomain = "block-browser-injections-by-domain";
     public const string AC2476_DeprecateStripeSourcesAPI = "AC-2476-deprecate-stripe-sources-api";
     public const string PersistPopupView = "persist-popup-view";
     public const string CipherKeyEncryption = "cipher-key-encryption";