diff --git a/plugins/commands/serve/service/internal_service.rb b/plugins/commands/serve/service/internal_service.rb
index 88b54a43c..5ced61bb8 100644
--- a/plugins/commands/serve/service/internal_service.rb
+++ b/plugins/commands/serve/service/internal_service.rb
@@ -24,7 +24,7 @@ module VagrantPlugins
             [:hosts, :HOST],
             [:providers, :PROVIDER],
             [:provisioners, :PROVISIONER],
-            [:synced_folders, :SYNCED_FOLDER]].map do |method, const|
+            [:synced_folders, :SYNCEDFOLDER]].map do |method, const|
             plugin_manager.send(method).map do |k, v|
               Hashicorp::Vagrant::Plugin.new(name: k, type: Hashicorp::Vagrant::Plugin::Type.const_get(const))
             end