diff --git a/7D.md b/7D.md
index d8509a6c..fb1b7188 100644
--- a/7D.md
+++ b/7D.md
@@ -6,15 +6,14 @@ Threads
 
 `draft` `optional`
 
-A thread is a `kind 11` event.  Threads SHOULD include a `subject` with a summary
-of the thread's topic.
+A thread is a `kind 11` event.  Threads SHOULD include a `title`.
 
 ```json
 {
   "kind": 11,
   "content": "Good morning",
   "tags": [
-    ["subject", "GM"]
+    ["title", "GM"]
   ]
 }
 ```