diff --git a/plugins/commands/serve/command.rb b/plugins/commands/serve/command.rb
index 2acdc3bc2..4f75ae271 100644
--- a/plugins/commands/serve/command.rb
+++ b/plugins/commands/serve/command.rb
@@ -58,6 +58,7 @@ module VagrantPlugins
         s.handle(VagrantPlugins::CommandServe::Serve::ProviderService.new)
         s.handle(Service::InternalService.new)
         s.handle(Service::HostService.new)
+        s.handle(Service::CommandService.new)
 
         health_checker = Grpc::Health::Checker.new
         health_checker.add_status(
diff --git a/plugins/commands/serve/service/command_service.rb b/plugins/commands/serve/service/command_service.rb
index f884602d6..cd12cfd0c 100644
--- a/plugins/commands/serve/service/command_service.rb
+++ b/plugins/commands/serve/service/command_service.rb
@@ -19,6 +19,7 @@ module VagrantPlugins
         end
 
         def synopsis_spec(*args)
+          return Hashicorp::Vagrant::Sdk::FuncSpec.new
           Hashicorp::Vagrant::Sdk::FuncSpec.new(
             name: "synopsis",
             result: [