diff --git a/plugins/provisioners/chef/provisioner/chef_solo.rb b/plugins/provisioners/chef/provisioner/chef_solo.rb
index 1bdd6c6dd..64876ffde 100644
--- a/plugins/provisioners/chef/provisioner/chef_solo.rb
+++ b/plugins/provisioners/chef/provisioner/chef_solo.rb
@@ -182,7 +182,7 @@ module VagrantPlugins
           command = CommandBuilder.command(:solo, @config,
             windows: windows?,
             colored: @machine.env.ui.color?,
-            legacy_mode: @config.legacy_mode
+            legacy_mode: @config.legacy_mode,
           )
 
           @config.attempts.times do |attempt|