diff --git a/src/Core/Enums/TwoFactorProviderType.cs b/src/Core/Enums/TwoFactorProviderType.cs
index 3779d5adde..40c4e55111 100644
--- a/src/Core/Enums/TwoFactorProviderType.cs
+++ b/src/Core/Enums/TwoFactorProviderType.cs
@@ -6,7 +6,7 @@
         Email = 1,
         Duo = 2,
         YubiKey = 3,
-        // U2f = 4, // Deprecated
+        U2f = 4, // Deprecated
         Remember = 5,
         OrganizationDuo = 6,
         WebAuthn = 7,