diff --git a/MimeClass.inc b/MimeClass.inc
index e0ba5750..d01cd9f8 100644
--- a/MimeClass.inc
+++ b/MimeClass.inc
@@ -195,7 +195,9 @@ class MimeClass {
     "zip" => "application/x-zip",
     // others:
     'bin' => 'application/octet-stream',
+    'json' => 'application/json',
   );
+
   private $private_file_extensions;
   private $system_types;
   private $system_exts;