diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index 55688ba..6ac3a51 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -2932,6 +2932,7 @@ function fm_get_text_mimes()
         'application/x-javascript',
         'image/svg+xml',
         'message/rfc822',
+        'application/json',
     );
 }