diff --git a/windows/security/threat-protection/TOC.md b/windows/security/threat-protection/TOC.md
index 679a09e7a6..6bd5d92cb5 100644
--- a/windows/security/threat-protection/TOC.md
+++ b/windows/security/threat-protection/TOC.md
@@ -596,9 +596,9 @@
 ### [Migration guides]()
 #### [Migrate from Symantec to Microsoft Defender ATP]()
 ##### [Overview and planning](microsoft-defender-atp/symantec-to-microsoft-defender-atp-migration.md)
-##### [Part 1: Prepare for your migration](microsoft-defender-atp/symantec-to-microsoft-defender-atp-prepare.md)
-##### [Part 2: Set up Microsoft Defender ATP](microsoft-defender-atp/symantec-to-microsoft-defender-atp-setup.md)
-##### [Part 3: Onboard to Microsoft Defender ATP](microsoft-defender-atp/symantec-to-microsoft-defender-atp-onboard.md)
+##### [Prepare for your migration](microsoft-defender-atp/symantec-to-microsoft-defender-atp-prepare.md)
+##### [Set up Microsoft Defender ATP](microsoft-defender-atp/symantec-to-microsoft-defender-atp-setup.md)
+##### [Onboard to Microsoft Defender ATP](microsoft-defender-atp/symantec-to-microsoft-defender-atp-onboard.md)
 #### [Manage Microsoft Defender ATP post migration](microsoft-defender-atp/microsoft-defender-atp-post-migration-management.md)
 
 ### [Partner integration scenarios]()