diff --git a/src/scribe/services/shape_ledger.py b/src/scribe/services/shape_ledger.py
index 701cf7b..61d7e79 100644
--- a/src/scribe/services/shape_ledger.py
+++ b/src/scribe/services/shape_ledger.py
@@ -1290,7 +1290,12 @@ async def stamp_write_path_instances(
             # call-site fact, independent of which one the row is judged to be.
             await record_uses(
                 session, row,
-                [s_id for rank, _at, s_id, _why in bucket if rank == 2],
+                # Indexed, not destructured: this list widened from 4 to 5 when
+                # the canon's form joined it (#4204) and a positional unpack
+                # here went on reading four. The unit lane never touches
+                # `record_uses`, so it stayed green and the integration lane
+                # was the only thing that said so.
+                [t[2] for t in bucket if t[0] == 2],
                 basis="hook", evidence="write path: pulled the snippet, payload names its symbol",
             )
         if stamped: