diff --git a/src/Bridge/Symfony/Bundle/DependencyInjection/Configuration.php b/src/Bridge/Symfony/Bundle/DependencyInjection/Configuration.php
index 0cce2b43974..919ef7bd4e2 100644
--- a/src/Bridge/Symfony/Bundle/DependencyInjection/Configuration.php
+++ b/src/Bridge/Symfony/Bundle/DependencyInjection/Configuration.php
@@ -68,7 +68,10 @@ public function getConfigTreeBuilder()
                 ->end()
             ->end();
 
-        $this->addFormatSection($rootNode, 'formats', ['jsonld' => ['mime_types' => ['application/ld+json']]]);
+        $this->addFormatSection($rootNode, 'formats', [
+            'jsonld' => ['mime_types' => ['application/ld+json']],
+            'json' => ['mime_types' => ['application/json']], // Enabled by default to have Swagger support
+        ]);
         $this->addFormatSection($rootNode, 'error_formats', [
             'jsonproblem' => ['mime_types' => ['application/problem+json']],
             'jsonld' => ['mime_types' => ['application/ld+json']],
diff --git a/tests/Bridge/Symfony/Bundle/DependencyInjection/ConfigurationTest.php b/tests/Bridge/Symfony/Bundle/DependencyInjection/ConfigurationTest.php
index 67774365e13..a4e12145023 100644
--- a/tests/Bridge/Symfony/Bundle/DependencyInjection/ConfigurationTest.php
+++ b/tests/Bridge/Symfony/Bundle/DependencyInjection/ConfigurationTest.php
@@ -34,7 +34,10 @@ public function testDefaultConfig()
             'title' => 'title',
             'description' => 'description',
             'version' => '1.0.0',
-            'formats' => ['jsonld' => ['mime_types' => ['application/ld+json']]],
+            'formats' => [
+                'jsonld' => ['mime_types' => ['application/ld+json']],
+                'json' => ['mime_types' => ['application/json']],
+            ],
             'error_formats' => [
                 'jsonproblem' => ['mime_types' => ['application/problem+json']],
                 'jsonld' => ['mime_types' => ['application/ld+json']],