diff --git a/tests/Api/OpenSearchTest.php b/tests/Api/OpenSearchTest.php
index 72b4e4d..a242319 100644
--- a/tests/Api/OpenSearchTest.php
+++ b/tests/Api/OpenSearchTest.php
@@ -6,7 +6,6 @@ class Api_OpenSearchTest extends TestBaseApi
     protected $urlPart = '';
 
 
-
     public function testOpenSearchAvailable()
     {
         $req  = $this->getRequest();
@@ -46,6 +45,15 @@ class Api_OpenSearchTest extends TestBaseApi
         );
     }
 
+    public function testOpenSearchContentType()
+    {
+        $res = $this->getRequest('api/opensearch.php')->send();
+        $this->assertEquals(
+            'text/xml; charset=utf-8',
+            $res->getHeader('content-type')
+        );
+    }
+
 }
 
 ?>
\ No newline at end of file