diff --git a/README.md b/README.md
index 111eef9..7dc9c72 100644
--- a/README.md
+++ b/README.md
@@ -32,4 +32,4 @@ sensor:
       hours: 2
     rounding: 1
 ```
-Note: Name and scan_interval are optional. If scan_interval is not set a default value of 1 hours will be used. Most Aurora+ data is updated daily.
+Note: Name, scan_interval and rounding are optional. If scan_interval is not set a default value of 1 hours will be used. If rounding is not set a default value of 2 will be used. Most Aurora+ data is updated daily.