diff --git a/windows/security/threat-protection/security-policy-settings/system-settings-optional-subsystems.md b/windows/security/threat-protection/security-policy-settings/system-settings-optional-subsystems.md
index d287cf1d46..1634b509b2 100644
--- a/windows/security/threat-protection/security-policy-settings/system-settings-optional-subsystems.md
+++ b/windows/security/threat-protection/security-policy-settings/system-settings-optional-subsystems.md
@@ -20,6 +20,7 @@ ms.technology: itpro-security
 # System settings: Optional subsystems
 
 **Applies to**
+-   Windows 11
 -   Windows 10
 
 Describes the best practices, location, values, policy management, and security considerations for the **System settings: Optional subsystems** security policy setting.