diff --git a/lib/puppet_x/puppetlabs/strings/yard/tags/directives.rb b/lib/puppet_x/puppetlabs/strings/yard/tags/directives.rb
index dcb60e0..0b94793 100644
--- a/lib/puppet_x/puppetlabs/strings/yard/tags/directives.rb
+++ b/lib/puppet_x/puppetlabs/strings/yard/tags/directives.rb
@@ -3,7 +3,7 @@ require 'puppet_x/puppetlabs/strings/yard/core_ext/yard'
 class PuppetX::PuppetLabs::Strings::YARD::Tags::PuppetTypeParameterDirective < YARD::Tags::Directive
   def call
     return if object.nil?
-    object.parameters << ([tag.text] + tag.types)
+    object.parameters << ([tag.text, tag.types].flatten)
     object.parameter_details << {:name => tag.name, :desc => tag.text, :exists? => true, :puppet_type => true}
   end
 end