diff --git a/src/json-rpc/src/Exception/Handler/HttpExceptionHandler.php b/src/json-rpc/src/Exception/Handler/HttpExceptionHandler.php
index a2ddfba6e..01838d197 100644
--- a/src/json-rpc/src/Exception/Handler/HttpExceptionHandler.php
+++ b/src/json-rpc/src/Exception/Handler/HttpExceptionHandler.php
@@ -21,8 +21,14 @@ use Throwable;
 
 class HttpExceptionHandler extends ExceptionHandler
 {
+    /**
+     * @var StdoutLoggerInterface
+     */
     protected $logger;
 
+    /**
+     * @var FormatterInterface
+     */
     protected $formatter;
 
     public function __construct(StdoutLoggerInterface $logger, FormatterInterface $formatter)