diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index 516d0815..46311d3a 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -198,6 +198,7 @@ import {
   resolveTerrainLodLevelIndexWithHysteresis,
   TERRAIN_LOD_DEBUG_COLORS
 } from "../geometry/terrain-mesh";
+import { buildSplineRoadMeshGeometry } from "../geometry/spline-road-mesh";
 import {
   applyTerrainBrushStampInPlace,
   createTerrainBrushPatchFromTerrains,