diff --git a/plugins/commands/plugin/action/list_plugins.rb b/plugins/commands/plugin/action/list_plugins.rb
index 4abbcab99..b446b323a 100644
--- a/plugins/commands/plugin/action/list_plugins.rb
+++ b/plugins/commands/plugin/action/list_plugins.rb
@@ -1,5 +1,3 @@
-require "set"
-
 module VagrantPlugins
   module CommandPlugin
     module Action