diff --git a/rules/windows/powershell/powershell_script/powershell_malicious_commandlets.yml b/rules/windows/powershell/powershell_script/powershell_malicious_commandlets.yml
index dcd74c258..751c93c74 100644
--- a/rules/windows/powershell/powershell_script/powershell_malicious_commandlets.yml
+++ b/rules/windows/powershell/powershell_script/powershell_malicious_commandlets.yml
@@ -114,7 +114,7 @@ detection:
             - "Invoke-Mimikittenz"
             - "Invoke-AllChecks"
     false_positives:
-        ScriptBlockText|contains
+        ScriptBlockText|contains:
             - Get-SystemDriveInfo  # http://bheltborg.dk/Windows/WinSxS/amd64_microsoft-windows-maintenancediagnostic_31bf3856ad364e35_10.0.10240.16384_none_91ef7543a4514b5e/CL_Utility.ps1
             - C:\ProgramData\Amazon\EC2-Windows\Launch\Module\Scripts\Set-Wallpaper.ps1  # false positive form Amazon EC2
     condition: select_Malicious and not false_positives