diff --git a/lib/vagrant/communication/ssh.rb b/lib/vagrant/communication/ssh.rb
index 92d6e5a32..07bea992f 100644
--- a/lib/vagrant/communication/ssh.rb
+++ b/lib/vagrant/communication/ssh.rb
@@ -93,7 +93,7 @@ module Vagrant
 
         # Otherwise, it is a permission denied, so let's raise a proper
         # exception
-        raise Errors::SCPPermissionDenied, :path => from
+        raise Errors::SCPPermissionDenied, :path => from.to_s
       end
 
       protected