diff --git a/goodwe_controller/test_safety83.py b/goodwe_controller/test_safety83.py
index 25ce45a..10c77f1 100644
--- a/goodwe_controller/test_safety83.py
+++ b/goodwe_controller/test_safety83.py
@@ -35,7 +35,8 @@ logging.disable(logging.WARNING)
 import opt11_identity as rig                                   # noqa: E402
 import safety78_identity as s78                                # noqa: E402
 import safety79_identity as s79                                # noqa: E402
-from app.arbiter import Claim, P_MAINTENANCE, P_PEAK           # noqa: E402
+from app.arbiter import (Claim, P_MAINTENANCE, P_PEAK, P_SAFETY,  # noqa
+                         resolve)
 from app.main import Controller                                # noqa: E402
 from app.maintenance import CHARGE, DRAIN, MaintResult         # noqa: E402
 
@@ -229,6 +230,15 @@ check("at the boundary: a floor at or below the 2000 W drain stays at P_PEAK, "
       "a floor 0.5 W above it is refiled at P_MAINTENANCE",
       _edge == {1999.5: P_PEAK, 2000.0: P_PEAK, 2000.5: P_MAINTENANCE})
 
+_stop = [Claim.set("maintenance", P_MAINTENANCE, 2000.0, DRAIN),
+         Claim.limit("peak", P_PEAK, lo=4000.0, reason="quarter peak"),
+         Claim.set("safety", P_SAFETY, 0.0, "inputs missing")]
+Controller._peak_over_drain(_one, _stop, [MaintResult(DRAIN, True, 2000.0,
+                                                      False, [])])
+check("⭐ and a refiled floor stays under a safety SET: the site resolves "
+      "to 0 W", _stop[1].priority == P_MAINTENANCE
+      and resolve(_stop).target_w == 0.0)
+
 
 def store_hold():
     st = rig._Store()