diff --git a/windows/security/threat-protection/windows-defender-antivirus/images/MDATP_1_RegisterApp.png b/windows/security/threat-protection/windows-defender-antivirus/images/MDATP-1-RegisterApp.png
similarity index 100%
rename from windows/security/threat-protection/windows-defender-antivirus/images/MDATP_1_RegisterApp.png
rename to windows/security/threat-protection/windows-defender-antivirus/images/MDATP-1-RegisterApp.png
diff --git a/windows/security/threat-protection/windows-defender-antivirus/images/MDATP_2_DownloadPackages.png b/windows/security/threat-protection/windows-defender-antivirus/images/MDATP-2-DownloadPackages.png
similarity index 100%
rename from windows/security/threat-protection/windows-defender-antivirus/images/MDATP_2_DownloadPackages.png
rename to windows/security/threat-protection/windows-defender-antivirus/images/MDATP-2-DownloadPackages.png
diff --git a/windows/security/threat-protection/windows-defender-antivirus/images/MDATP_3_ConfirmDeviceMgmt.png b/windows/security/threat-protection/windows-defender-antivirus/images/MDATP-3-ConfirmDeviceMgmt.png
similarity index 100%
rename from windows/security/threat-protection/windows-defender-antivirus/images/MDATP_3_ConfirmDeviceMgmt.png
rename to windows/security/threat-protection/windows-defender-antivirus/images/MDATP-3-ConfirmDeviceMgmt.png