diff --git a/images/win/scripts/Installers/Install-SQLExpress.ps1 b/images/win/scripts/Installers/Install-SQLExpress.ps1
index ebdb2c747..8b40d9219 100644
--- a/images/win/scripts/Installers/Install-SQLExpress.ps1
+++ b/images/win/scripts/Installers/Install-SQLExpress.ps1
@@ -45,11 +45,11 @@ function Unpack-SQLInstaller {
 
 function Start-Installer {
     param(
-        [String]$InstallPath,
+        [String]$InstallerPath,
         [String]$Arguments = ("/Q", "/IACCEPTSQLSERVERLICENSETERMS", "/Action=Install", "/INSTANCEID=SQL2019", "/INSTANCENAME=SQL2019", "/SECURITYMODE=SQL", "/SAPWD=P@ssword!!", "/TCPENABLED=1")
     )
     Write-Host "Installating SQL Express..."
-    $process = Start-Process -FilePath $InstallPath -ArgumentList $Arguments -Wait -PassThru
+    $process = Start-Process -FilePath $InstallerPath -ArgumentList $Arguments -Wait -PassThru
     $exitCode = $process.ExitCode
     if ($exitCode -eq 0)
     {
@@ -67,5 +67,5 @@ $setupPath = Join-Path $downloadPath "SQLEXPR_x64_ENU"
 Set-Location -Path $downloadPath
 $installerPath = Start-DownloadWithRetry -Url "https://go.microsoft.com/fwlink/?linkid=866658" -Name "SQL2019-SSEI-Expr.exe"
 Download-FullSQLPackage -InstallerPath $installerPath
-Unpack-SQLInstaller -InstallPath "$setupPath.exe"
-Start-Installer -InstallPath "$setupPath/SETUP.exe"
\ No newline at end of file
+Unpack-SQLInstaller -InstallPath (Join-Path $setupPath ".exe")
+Start-Installer -InstallPath (Join-Path $setupPath "SETUP.exe")
\ No newline at end of file