diff --git a/plugins/provisioners/ansible/provisioner.rb b/plugins/provisioners/ansible/provisioner.rb
index ce8cdf741..aae761f0a 100644
--- a/plugins/provisioners/ansible/provisioner.rb
+++ b/plugins/provisioners/ansible/provisioner.rb
@@ -11,7 +11,7 @@ module VagrantPlugins
         options = %W[--private-key=#{ssh[:private_key_path][0]} --user=#{ssh[:username]}]
 
         # Joker! Not (yet) supported arguments can be passed this way.
-        options << "#{config.raw_arguments}" if config.raw_arguments
+        options.concat(self.as_array(config.raw_arguments)) if config.raw_arguments
 
         # Append Provisioner options (highest precedence):
         options << "--inventory-file=#{self.setup_inventory_file}"
@@ -123,6 +123,10 @@ module VagrantPlugins
       def as_list_argument(v)
         v.kind_of?(Array) ? v.join(',') : v
       end
+
+      def as_array(v)
+        v.kind_of?(Array) ? v : [v]
+      end
     end
   end
 end
diff --git a/website/docs/source/v2/provisioning/ansible.html.md b/website/docs/source/v2/provisioning/ansible.html.md
index 20f48fa0e..f5e07eb47 100644
--- a/website/docs/source/v2/provisioning/ansible.html.md
+++ b/website/docs/source/v2/provisioning/ansible.html.md
@@ -143,7 +143,7 @@ by the sudo command.
 * `ansible.tags` can be set to a string or an array of tags. Only plays, roles and tasks tagged with these values will be executed.
 * `ansible.skip_tags` can be set to a string or an array of tags. Only plays, roles and tasks that *do not match* these values will be executed.
 * `ansible.start_at_task` can be set to a string corresponding to the task name where the playbook provision will start.
-* `ansible.raw_arguments` is an *unsafe wildcard* string that can be used to take advantage of `ansible-playbook` arguments that are not (yet) supported by this Vagrant provisioner plugin. This can be very useful when integrating with bleeding edge Ansible versions. Following precedence rules apply:
+* `ansible.raw_arguments` can be set to an array of strings corresponding to a list of `ansible-playbook` arguments (e.g. `['--check', '-M /my/modules']`). It is an *unsafe wildcard* that can be used to apply Ansible options that are not (yet) supported by this Vagrant provisioner. Following precedence rules apply:
   * Any supported options (described above) will override conflicting `raw_arguments` value (e.g. `--tags` or `--start-at-task`)
   * Vagrant default user authentication can be overridden via `raw_arguments` (with custom values for `--user` and `--private-key`)
 * `ansible.groups` can be used to pass a hash of group names and group members to be included in the generated inventory file.  For example: