diff --git a/build.ps1 b/build.ps1
index 25bc74777..fbedc2f59 100644
--- a/build.ps1
+++ b/build.ps1
@@ -33,6 +33,8 @@ Function CleanFolder($path)
     Write-Host Removing XMLDoc files
     get-childitem $path -File -Filter *.xml -Recurse | foreach ($_) {remove-item $_.fullname}
 
+    get-childitem $path -File -Filter *.transform -Recurse  | foreach ($_) {remove-item $_.fullname}
+
     Write-Host Removing FluentValidation.Resources  files
     get-childitem $path -File -Filter FluentValidation.resources.dll -recurse | foreach ($_) {remove-item $_.fullname}