diff --git a/src/grimoire/services/retrieval_tuning.py b/src/grimoire/services/retrieval_tuning.py
index 1ee25c0b..0769f2d9 100644
--- a/src/grimoire/services/retrieval_tuning.py
+++ b/src/grimoire/services/retrieval_tuning.py
@@ -260,7 +260,10 @@ async def set_dial(
 
     # A shared floor moves every surface that reads it, and each one's history
     # has to show the move, or its telemetry changes with no event to explain it.
-    moved = sharing_floor(surface) if dial == "floor" else [surface]
+    # The surface the caller named is recorded first, its siblings after it.
+    moved = [surface] + (
+        [n for n in sharing_floor(surface) if n != surface] if dial == "floor" else []
+    )
 
     await set_setting(user_id, key, stored)
     async with async_session() as session: