diff --git a/Tools.ps1 b/Tools.ps1
index 984f1bd..0689475 100644
--- a/Tools.ps1
+++ b/Tools.ps1
@@ -801,7 +801,7 @@ Function Get-GUIDFromMSIUninstallString ([string]$str) {
     Return $str.Substring($start, $end - $start)
 }
 
-Function Uninstall-MSI ([string]$APP_NAME) {
+Function Uninstall-MSI ([Parameter(ValueFromPipeline=$true)][string]$APP_NAME) {
 
     # Get all of the uninstall registry keys
     $UNINSTALL_KEYS = Get-ChildItem -Path HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall