diff --git a/skills/videodb/reference/capture-reference.md b/skills/videodb/reference/capture-reference.md
index cf98326e..4427aae9 100644
--- a/skills/videodb/reference/capture-reference.md
+++ b/skills/videodb/reference/capture-reference.md
@@ -391,6 +391,8 @@ For RTStream methods (indexing, transcription, alerts, batch config), see [rtstr
   │   exported     │ ──> Access video_id, stream_url, player_url
   └───────────────┘
 
+          │
+          v
   ┌───────────────┐     WebSocket: capture_session.failed
   │    failed      │ ──> Inspect error payload and retry setup
   └───────────────┘
diff --git a/skills/videodb/scripts/ws_listener.py b/skills/videodb/scripts/ws_listener.py
index 4b1ebf51..968038fe 100644
--- a/skills/videodb/scripts/ws_listener.py
+++ b/skills/videodb/scripts/ws_listener.py
@@ -79,7 +79,7 @@ _first_connection = True
 
 def log(msg: str):
     """Log with timestamp."""
-    LOGGER.info(msg)
+    LOGGER.info("%s", msg)
 
 
 def append_event(event: dict):