diff --git a/wmi-adapter/wmi.resource.ps1 b/wmi-adapter/wmi.resource.ps1
index 1bedc227..908e987c 100644
--- a/wmi-adapter/wmi.resource.ps1
+++ b/wmi-adapter/wmi.resource.ps1
@@ -9,6 +9,7 @@ param(
     $stdinput
 )
 
+# catch any un-caught exception and write it to the error stream
 trap {
     Write-Trace -Level Error -message $_.Exception.Message
     exit 1