diff --git a/claude-spec/01-architecture.md b/claude-spec/01-architecture.md
index 7c31e7a4..dcc4c2d0 100644
--- a/claude-spec/01-architecture.md
+++ b/claude-spec/01-architecture.md
@@ -38,7 +38,7 @@ js/mzta-prompts.js       (builds final prompt string)
        ↓
  Result returned to background
        ↓
-js/mzta-compose-script.js  (inserts text into Thunderbird compose window)
+js/mzta-compose-script.js  (inserts text into Thunderbird compose window and display window)
 ```
 
 ### Data Flow: Inline Summary on Message Display