diff --git a/README.md b/README.md
index 2071715..437a3cd 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,8 @@ logObject is a free-to-extend object which will be passed to reporters.
 
 Standard fields:
 
+- `message`
+- `additional`
 - `args`
 - `date`
 - `tag`