diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index f049223..e02b2d1 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -70,7 +70,7 @@ class Configuration implements ConfigurationInterface
                                     ->isRequired()
                                     ->validate()
                                         // header|query|request, but only query is implemented for now
-                                        ->ifNotInArray(array('query', 'http_basic'))
+                                        ->ifNotInArray(array('query', 'http_basic', 'header'))
                                         ->thenInvalid("Unknown authentication delivery type '%s'.")
                                     ->end()
                                 ->end()
diff --git a/Resources/views/layout.html.twig b/Resources/views/layout.html.twig
index 87777fc..60d5154 100644
--- a/Resources/views/layout.html.twig
+++ b/Resources/views/layout.html.twig
@@ -26,7 +26,7 @@
                     <option value="json"{{ defaultRequestFormat == 'json' ? ' selected' : '' }}>JSON</option>
                     <option value="xml"{{ defaultRequestFormat == 'xml' ? ' selected' : '' }}>XML</option>
                 </select>
-                {% if authentication and authentication.delivery in ['query', 'http_basic'] %}
+                {% if authentication and authentication.delivery in ['query', 'http_basic', 'header'] %}
                     api key: <input type="text" id="api_key" value=""/>
                 {% endif %}
                 {% if authentication and authentication.delivery in ['http_basic'] %}
@@ -271,6 +271,8 @@
                         beforeSend: function (xhr) {
                             if (authentication_delivery == 'http_basic') {
                                 xhr.setRequestHeader('Authorization', 'Basic ' + btoa($('#api_key').val() + ':' + $('#api_pass').val()));
+                            }else if(authentication_delivery == 'header') {
+                                xhr.setRequestHeader(api_key_parameter, $('#api_key').val());
                             }
                         },
                         complete: function(xhr) {
@@ -372,6 +374,9 @@
 
                     $('#api_key').val(api_key);
                 }
+                {% elseif authentication and authentication.delivery == 'header' %}
+                var authentication_delivery = '{{ authentication.delivery }}';
+                var api_key_parameter = '{{ authentication.name }}';
                 {% else %}
                 var authentication_delivery = false;
                 {% endif %}