diff --git a/lib/vagrant/box_collection/remote.rb b/lib/vagrant/box_collection/remote.rb
index 7644b991d..ec25700e1 100644
--- a/lib/vagrant/box_collection/remote.rb
+++ b/lib/vagrant/box_collection/remote.rb
@@ -33,7 +33,12 @@ module Vagrant
       # @return [Array] Array of `[name, version, provider]` of the boxes
       #   installed on this system.
       def all
-        client.all
+        all_boxes = client.all
+        boxes = []
+        all_boxes.each do |b|
+          boxes << [b.name, b.version, b.provider]
+        end
+        boxes
       end
 
       # @return [Box] The box found, or `nil` if not found.
diff --git a/plugins/commands/serve/client/box_collection.rb b/plugins/commands/serve/client/box_collection.rb
index 96e3a8519..95a029f8d 100644
--- a/plugins/commands/serve/client/box_collection.rb
+++ b/plugins/commands/serve/client/box_collection.rb
@@ -46,9 +46,9 @@ module VagrantPlugins
         end
 
         # @return [Vagrant::Box] box found
-        def find(name, providers, versions)
+        def find(name, providers, version)
           res = client.find(SDK::BoxCollection::FindRequest.new(
-            name: name, version: version, providers: providers
+            name: name, version: version, providers: Array(providers)
           ))
           box_client = Box.load(res, broker: broker)
           box = Vagrant::Box.new(