diff --git a/63.md b/63.md
index 2832fc7..c9cc731 100644
--- a/63.md
+++ b/63.md
@@ -64,7 +64,7 @@ Kind `30298` stores the latest state of the story.
 
 The `d` tag of the replaceable event MUST match the root event's id.
 
-The `e` tag points to the latest scene the user has read.
+The `a` tag points to the latest scene the user has read.
 
 ```jsonc
 {