diff --git a/PaypalRestGatewayFactory.php b/PaypalRestGatewayFactory.php
index 8cf8363..ec05491 100644
--- a/PaypalRestGatewayFactory.php
+++ b/PaypalRestGatewayFactory.php
@@ -49,7 +49,7 @@ protected function populateConfig(ArrayObject $config)
                 }
 
                 $credential = new OAuthTokenCredential($config['client_id'], $config['client_secret']);
-                $config['payum.api'] = new ApiContext($credential);
+                return new ApiContext($credential);
             };
         }
     }