diff --git a/images/win/scripts/Installers/Windows2019/Validate-WDK.ps1 b/images/win/scripts/Installers/Windows2019/Validate-WDK.ps1
index f1fe044d..7d1a3bf0 100644
--- a/images/win/scripts/Installers/Windows2019/Validate-WDK.ps1
+++ b/images/win/scripts/Installers/Windows2019/Validate-WDK.ps1
@@ -30,7 +30,7 @@ function Get-WDKVersion
 {
     $WDKVersion = (Get-WmiObject Win32_Product -Filter "Name = 'Windows Driver Kit'").version
 
-    if (!$WDK)
+    if (!$WDKVersion)
     {
         Write-Host "WDK was not found"
         exit 1