diff --git a/lib/vagrant/plugin/v2/config.rb b/lib/vagrant/plugin/v2/config.rb
index a74eb670c..f3db8e610 100644
--- a/lib/vagrant/plugin/v2/config.rb
+++ b/lib/vagrant/plugin/v2/config.rb
@@ -90,12 +90,10 @@ module Vagrant
         # Called after the configuration is finalized and loaded to validate
         # this object.
         #
-        # @param [Environment] env Vagrant::Environment object of the
-        #   environment that this configuration has been loaded into. This
-        #   gives you convenient access to things like the the root path
-        #   and so on.
-        # @param [ErrorRecorder] errors
-        def validate(env, errors)
+        # @param [Machine] machine Access to the machine that is being
+        #   validated.
+        # @return [Hash]
+        def validate(machine)
         end
       end
     end
diff --git a/plugins/provisioners/chef/config/base.rb b/plugins/provisioners/chef/config/base.rb
index 67bc2283a..f097d03b2 100644
--- a/plugins/provisioners/chef/config/base.rb
+++ b/plugins/provisioners/chef/config/base.rb
@@ -52,12 +52,6 @@ module VagrantPlugins
             run_list << name
         end
 
-        def validate(env, errors)
-          super
-
-          errors.add(I18n.t("vagrant.config.chef.vagrant_as_json_key")) if json.has_key?(:vagrant)
-        end
-
         def instance_variables_hash
           # Overridden so that the 'json' key could be removed, since its just
           # merged into the config anyways
diff --git a/plugins/provisioners/chef/config/chef_client.rb b/plugins/provisioners/chef/config/chef_client.rb
index ea734cc86..7d89aa5fd 100644
--- a/plugins/provisioners/chef/config/chef_client.rb
+++ b/plugins/provisioners/chef/config/chef_client.rb
@@ -22,12 +22,16 @@ module VagrantPlugins
         def file_backup_path; @file_backup_path || "/srv/chef/cache"; end
         def encrypted_data_bag_secret; @encrypted_data_bag_secret || "/tmp/encrypted_data_bag_secret"; end
 
-        def validate(env, errors)
-          super
+        def validate(machine)
+          errors = []
+          errors << I18n.t("vagrant.config.chef.server_url_empty") if \
+            !chef_server_url || chef_server_url.strip == ""
+          errors << I18n.t("vagrant.config.chef.validation_key_path") if \
+            !validation_key_path
+          errors << I18n.t("vagrant.config.chef.run_list_empty") if \
+            @run_list && @run_list.empty?
 
-          errors.add(I18n.t("vagrant.config.chef.server_url_empty")) if !chef_server_url || chef_server_url.strip == ""
-          errors.add(I18n.t("vagrant.config.chef.validation_key_path")) if !validation_key_path
-          errors.add(I18n.t("vagrant.config.chef.run_list_empty")) if @run_list && @run_list.empty?
+          { "chef client provisioner" => errors }
         end
       end
     end
diff --git a/plugins/provisioners/chef/config/chef_solo.rb b/plugins/provisioners/chef/config/chef_solo.rb
index 351e10fef..552af423b 100644
--- a/plugins/provisioners/chef/config/chef_solo.rb
+++ b/plugins/provisioners/chef/config/chef_solo.rb
@@ -37,11 +37,14 @@ module VagrantPlugins
           @nfs || false
         end
 
-        def validate(env, errors)
-          super
+        def validate(machine)
+          errors = []
+          errors << I18n.t("vagrant.config.chef.cookbooks_path_empty") if \
+            !cookbooks_path || [cookbooks_path].flatten.empty?
+          errors << I18n.t("vagrant.config.chef.run_list_empty") if \
+            !run_list || run_list.empty?
 
-          errors.add(I18n.t("vagrant.config.chef.cookbooks_path_empty")) if !cookbooks_path || [cookbooks_path].flatten.empty?
-          errors.add(I18n.t("vagrant.config.chef.run_list_empty")) if !run_list || run_list.empty?
+          { "chef solo provisioner" => errors }
         end
       end
     end
diff --git a/templates/locales/en.yml b/templates/locales/en.yml
index c42e6492e..a5751cdc1 100644
--- a/templates/locales/en.yml
+++ b/templates/locales/en.yml
@@ -311,8 +311,6 @@ en:
         cookbooks_path_empty: "Must specify a cookbooks path for chef solo."
         run_list_empty: "Run list must not be empty."
         server_url_empty: "Chef server URL must be populated."
-        vagrant_as_json_key: |-
-          `vagrant` cannot be a JSON key, because it is used by Vagrant already.
         validation_key_path: "Validation key path must be valid path to your chef server validation key."
       ssh:
         private_key_missing: "`private_key_path` file must exist: %{path}"