diff --git a/spec/defines/openstacklib_wsgi_apache_spec.rb b/spec/defines/openstacklib_wsgi_apache_spec.rb
index a83f3a98..080ffce7 100644
--- a/spec/defines/openstacklib_wsgi_apache_spec.rb
+++ b/spec/defines/openstacklib_wsgi_apache_spec.rb
@@ -119,8 +119,8 @@ describe 'openstacklib::wsgi::apache' do
           :custom_wsgi_script_aliases => {
             '/admin' => '/var/www/cgi-bin/keystone/admin'
           },
-          :headers                    => 'set X-Frame-Options "DENY"',
-          :request_headers            => 'set Content-Type "application/json"',
+          :headers                    => ['set X-Frame-Options "DENY"'],
+          :request_headers            => ['set Content-Type "application/json"'],
           :aliases                    => [
             { 'alias' => '/robots.txt', 'path'  => '/etc/keystone/robots.txt', }
           ],
@@ -166,8 +166,8 @@ describe 'openstacklib::wsgi::apache' do
         :wsgi_application_group      => '%{GLOBAL}',
         :wsgi_pass_authorization     => 'On',
         :wsgi_chunked_request        => 'On',
-        :headers                     => 'set X-Frame-Options "DENY"',
-        :request_headers             => 'set Content-Type "application/json"',
+        :headers                     => ['set X-Frame-Options "DENY"'],
+        :request_headers             => ['set Content-Type "application/json"'],
         :aliases                    => [
           { 'alias' => '/robots.txt', 'path' => '/etc/keystone/robots.txt', }
         ],