diff --git a/40.md b/40.md
index d0174eac..ce06d57e 100644
--- a/40.md
+++ b/40.md
@@ -12,7 +12,7 @@ The `expiration` tag enables users to specify a unix timestamp at which the mess
 
 ```
 tag: expiration
-options:
+values:
  - [UNIX timestamp in seconds]: required
 ```