diff --git a/windows/security/identity-protection/credential-guard/credential-guard-requirements.md b/windows/security/identity-protection/credential-guard/credential-guard-requirements.md
index 0e81b79e6d..7d32f96c99 100644
--- a/windows/security/identity-protection/credential-guard/credential-guard-requirements.md
+++ b/windows/security/identity-protection/credential-guard/credential-guard-requirements.md
@@ -28,7 +28,7 @@ For Windows Defender Credential Guard to provide protection, the computers you a
 To provide basic protections against OS level attempts to read Credential Manager domain credentials, NTLM and Kerberos derived credentials, Windows Defender Credential Guard uses:
 - Support for Virtualization-based security (required)
 - Secure boot (required)
-- TPM 2.0 either discrete or firmware (preferred - provides binding to hardware)
+- TPM 1.2 or 2.0, either discrete or firmware (preferred - provides binding to hardware)
 - UEFI lock (preferred - prevents attacker from disabling with a simple registry key change)
 
 The Virtualization-based security requires: