diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index 361b34e0..298e1ae4 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -89,8 +89,10 @@ import {
   type ScenePath
 } from "./paths";
 import {
+  MAX_TERRAIN_LAYER_COUNT,
+  MIN_TERRAIN_LAYER_COUNT,
   MIN_TERRAIN_SAMPLE_COUNT,
-  TERRAIN_LAYER_COUNT,
+  getTerrainStoredPaintWeightCount,
   type Terrain
 } from "./terrains";
 import {