diff --git a/plugins/provisioners/puppet/provisioner/puppet.rb b/plugins/provisioners/puppet/provisioner/puppet.rb
index 5ab948287..93f08425e 100644
--- a/plugins/provisioners/puppet/provisioner/puppet.rb
+++ b/plugins/provisioners/puppet/provisioner/puppet.rb
@@ -140,7 +140,7 @@ module VagrantPlugins
 
             # If we're on Windows, we need to use the PowerShell style
             if windows?
-              facts.map! { |v| "$env:#{v};" }
+              facts.map! { |v| "`$env:#{v};" }
             end
 
             facter = "#{facts.join(" ")} "