diff --git a/custom_components/houseplan/radar.py b/custom_components/houseplan/radar.py
index 1f65854a..b25f95b1 100644
--- a/custom_components/houseplan/radar.py
+++ b/custom_components/houseplan/radar.py
@@ -27,8 +27,8 @@ from .radar_geometry import (
     clipped_arc_segments,
     length_cm,
     point_in_polygon,
-    polygon_is_convex,
     polar_to_cartesian,
+    polygon_is_convex,
     project_local,
 )
 from .radar_validation import radar_source_entity_ids, validate_radar_draft
diff --git a/custom_components/houseplan/validation.py b/custom_components/houseplan/validation.py
index 04f1a5f7..a33fccc3 100644
--- a/custom_components/houseplan/validation.py
+++ b/custom_components/houseplan/validation.py
@@ -18,7 +18,6 @@ from custom_components.houseplan.coordinate_canonicalization import (
     canonicalize_position,
 )
 from custom_components.houseplan.vacuum_routes import validate_marker_routes
-from custom_components.houseplan.radar_validation import validate_marker_radars
 
 # ---------- limits and extension sets ----------
 PLAN_EXTENSIONS = {"svg": "image/svg+xml", "png": "image/png", "jpg": "image/jpeg", "webp": "image/webp"}
diff --git a/custom_components/houseplan/websocket_api.py b/custom_components/houseplan/websocket_api.py
index 9c72d265..d7081c7a 100755
--- a/custom_components/houseplan/websocket_api.py
+++ b/custom_components/houseplan/websocket_api.py
@@ -81,6 +81,7 @@ from .plans import (
     reserve_filename,
 )
 from .projection import project_config, project_layout
+from .radar_validation import RadarValidationError
 from .registry_snapshot import import_registry_snapshot
 from .store import (
     LAYOUT_STORE_CORE_KEYS,
@@ -125,7 +126,6 @@ from .validation import (
     validate_partition_opening_hosts,
     validate_wall_model_transition,
 )
-from .radar_validation import RadarValidationError
 from .virtual_lights import (
     EVENT_VIRTUAL_LIGHT_UPDATED,
     async_toggle_virtual_light,