diff --git a/lib/vagrant/util/ssh.rb b/lib/vagrant/util/ssh.rb
index df4d86ca2..6087f81a4 100644
--- a/lib/vagrant/util/ssh.rb
+++ b/lib/vagrant/util/ssh.rb
@@ -140,7 +140,7 @@ module Vagrant
         end
 
         # no strict hostkey checking unless paranoid
-        if ssh_info[:verify_host_key] == :never
+        if ssh_info[:verify_host_key] == :never || !ssh_info[:verify_host_key]
           command_options += [
             "-o", "StrictHostKeyChecking=no",
             "-o", "UserKnownHostsFile=/dev/null"]