diff --git a/Formatter/SwaggerFormatter.php b/Formatter/SwaggerFormatter.php
index 078f098..3ab0cef 100644
--- a/Formatter/SwaggerFormatter.php
+++ b/Formatter/SwaggerFormatter.php
@@ -246,6 +246,8 @@ class SwaggerFormatter implements FormatterInterface
                 );
             }
 
+            $type = isset($responseMessages[200]['responseModel']) ? $responseMessages[200]['responseModel'] : null;
+
             foreach ($apiDoc->getRoute()->getMethods() as $method) {
                 $operation = array(
                     'method' => $method,
@@ -255,6 +257,10 @@ class SwaggerFormatter implements FormatterInterface
                     'responseMessages' => array_values($responseMessages),
                 );
 
+                if ($type !== null) {
+                    $operation['type'] = $type;
+                }
+
                 $apiBag[$path][] = $operation;
             }
         }
diff --git a/Tests/Formatter/SwaggerFormatterTest.php b/Tests/Formatter/SwaggerFormatterTest.php
index 7a03171..d8f543f 100644
--- a/Tests/Formatter/SwaggerFormatterTest.php
+++ b/Tests/Formatter/SwaggerFormatterTest.php
@@ -237,6 +237,7 @@ class SwaggerFormatterTest extends WebTestCase
                                                         'responseModel' => 'Nelmio.ApiDocBundle.Tests.Fixtures.Model.JmsNested',
                                                     ),
                                                 ),
+                                            'type' => 'Nelmio.ApiDocBundle.Tests.Fixtures.Model.JmsNested',
                                         ),
                                     ),
                             ),