diff --git a/Powershell/Remove SCOM Agent/Remove_SCOM_Agent.ps1 b/Powershell/Remove SCOM Agent/Remove_SCOM_Agent.ps1
index 0d6358a..04b4ef7 100644
--- a/Powershell/Remove SCOM Agent/Remove_SCOM_Agent.ps1	
+++ b/Powershell/Remove SCOM Agent/Remove_SCOM_Agent.ps1	
@@ -12,6 +12,8 @@
         This script will attempt to remove all registered services, performance counters, DLLs, and program files. This script makes direct deletions
         from the registry and file system.
 
+        One external file is REQUIRED: RegistryKeys.txt
+
     .HOWTO
         1. Have the 'Remove_SCOM_Agent.ps1' file downloaded to the local machine that you want to remove an agent on
         2. Make sure the user in question has Administrator rights on the machine