diff --git a/setupTmp.ps1 b/setupTmp.ps1
index 1533825..7ff0043 100644
--- a/setupTmp.ps1
+++ b/setupTmp.ps1
@@ -147,7 +147,7 @@ function DownloadFiles {
             Write-Host "File not found, downloading..."
             Invoke-WebRequest -Uri $fileInfo.Url -OutFile $filePath
         }
-        if ((Get-FileHash -Path $filePath -Algorithm SHA1).Hash -ne $fileInfo.Hash) {
+        if ($fileInfo.Hash -and (Get-FileHash -Path $filePath -Algorithm SHA1).Hash -ne $fileInfo.Hash) {
             Write-Host "File hash mismatch, redownloading..."
             Invoke-WebRequest -Uri $fileInfo.Url -OutFile $filePath
         }