diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index 2c078cd3..a2692249 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -108,6 +108,14 @@ import {
   type ScenePathRoadEdgeSettings,
   type ScenePath
 } from "./paths";
+import {
+  MAX_SPLINE_CORRIDOR_JUNCTION_CLIP_DISTANCE,
+  MAX_SPLINE_CORRIDOR_JUNCTION_RADIUS,
+  MIN_SPLINE_CORRIDOR_JUNCTION_CLIP_DISTANCE,
+  MIN_SPLINE_CORRIDOR_JUNCTION_RADIUS,
+  isSplineCorridorJunctionTerrainMode,
+  type SplineCorridorJunction
+} from "./spline-corridor-junctions";
 import {
   MAX_TERRAIN_LAYER_COUNT,
   MIN_TERRAIN_LAYER_COUNT,