diff --git a/scripts/Windows/OS/Install.ps1 b/scripts/Windows/OS/Install.ps1
index eb2ec892..ed28c7ce 100644
--- a/scripts/Windows/OS/Install.ps1
+++ b/scripts/Windows/OS/Install.ps1
@@ -17,8 +17,13 @@ $null = New-Module {
         Finishes the installation of a running Windows machine.
     #>
     function Start-WindowsInstallation {
-        $env:WSLENV = "CONFIG_MODULE/p";
         $ErrorActionPreference = 'Inquire';
+        $env:WSLENV = "CONFIG_MODULE/p";
+
+        if ($env:CONFIG_MODULE) {
+            $env:CONFIG_MODULE = Resolve-Path $env:CONFIG_MODULE;
+        }
+
         Start-InstallationLoop;
     }