diff --git a/Sources/Winget-AutoUpdate/functions/Update-WAU.ps1 b/Sources/Winget-AutoUpdate/functions/Update-WAU.ps1
index 8fa2cc2..f294bb9 100644
--- a/Sources/Winget-AutoUpdate/functions/Update-WAU.ps1
+++ b/Sources/Winget-AutoUpdate/functions/Update-WAU.ps1
@@ -18,7 +18,7 @@ function Update-WAU {
 
         #Update WAU
         Write-ToLog "Updating WAU..." "Yellow"
-        Start-Process msiexec.exe -ArgumentList "/i $MsiFile /qn /L*v ""$WorkingDir\logs\WAU-Installer.log"" RUN_WAU=YES" -Wait
+        Start-Process msiexec.exe -ArgumentList "/i $MsiFile /qn /L*v ""$WorkingDir\logs\WAU-Installer.log"" RUN_WAU=YES INSTALLDIR=""$WorkingDir""" -Wait
 
         #Send success Notif
         Write-ToLog "WAU Update completed. Rerunning WAU..." "Green"