diff --git a/windows/security/threat-protection/windows-defender-atp/exposed-apis-windows-defender-advanced-threat-protection.md b/windows/security/threat-protection/windows-defender-atp/exposed-apis-windows-defender-advanced-threat-protection.md
index 82d6912c6d..67ec69e0e1 100644
--- a/windows/security/threat-protection/windows-defender-atp/exposed-apis-windows-defender-advanced-threat-protection.md
+++ b/windows/security/threat-protection/windows-defender-atp/exposed-apis-windows-defender-advanced-threat-protection.md
@@ -14,7 +14,7 @@ ms.localizationpriority: medium
 ms.date: 10/23/2017
 ---
 
-# Use the Windows Defender ATP exposed APIs 
+# Use the Windows Defender ATP exposed APIs (deprecated)
 
 **Applies to:**