diff --git a/packages/frontend-misskey-world-engine/src/room/ObjectContainer.ts b/packages/frontend-misskey-world-engine/src/room/ObjectContainer.ts
index 2a6ed8ad02..3063901fe8 100644
--- a/packages/frontend-misskey-world-engine/src/room/ObjectContainer.ts
+++ b/packages/frontend-misskey-world-engine/src/room/ObjectContainer.ts
@@ -4,7 +4,8 @@
  */
 
 import * as BABYLON from '@babylonjs/core';
-import { scaleMorph, camelToKebab, Timer } from '../utility.js';
+import { camelToKebab } from 'misskey-world/src/utility.js';
+import { scaleMorph, Timer } from '../utility.js';
 import { getObjectDef } from './object-defs.js';
 import { ModelManager, SYSTEM_MESH_NAMES } from './utility.js';
 import { convertRawOptions } from './object.js';
diff --git a/packages/frontend-misskey-world-engine/src/room/objects/electronicDisplayBoard.ts b/packages/frontend-misskey-world-engine/src/room/objects/electronicDisplayBoard.ts
index afac1d8c90..8f780bc06e 100644
--- a/packages/frontend-misskey-world-engine/src/room/objects/electronicDisplayBoard.ts
+++ b/packages/frontend-misskey-world-engine/src/room/objects/electronicDisplayBoard.ts
@@ -4,9 +4,9 @@
  */
 
 import * as BABYLON from '@babylonjs/core';
-import { defineObject } from '../object.js';
-import { RecyvlingTextGrid } from 'misskey-world/src/utility.js';
 import { electronicDisplayBoard_schema } from 'misskey-world/src/room/objects/electronicDisplayBoard.schema.js';
+import { defineObject } from '../object.js';
+import { RecyvlingTextGrid } from '../../utility.js';
 
 export const electronicDisplayBoard = defineObject(electronicDisplayBoard_schema, {
 	createInstance: async ({ scene, options, model, timer }) => {
diff --git a/packages/frontend-misskey-world-engine/src/room/objects/tabletopDigitalClock.ts b/packages/frontend-misskey-world-engine/src/room/objects/tabletopDigitalClock.ts
index 9ac0ec367a..9d7e3e9484 100644
--- a/packages/frontend-misskey-world-engine/src/room/objects/tabletopDigitalClock.ts
+++ b/packages/frontend-misskey-world-engine/src/room/objects/tabletopDigitalClock.ts
@@ -4,9 +4,10 @@
  */
 
 import * as BABYLON from '@babylonjs/core';
-import { defineObject } from '../object.js';
-import { cm, get7segMeshesOfCurrentTime, WORLD_SCALE } from 'misskey-world/src/utility.js';
+import { cm, WORLD_SCALE } from 'misskey-world/src/utility.js';
 import { tabletopDigitalClock_schema } from 'misskey-world/src/room/objects/tabletopDigitalClock.schema.js';
+import { defineObject } from '../object.js';
+import { get7segMeshesOfCurrentTime } from '../../utility.js';
 
 export const tabletopDigitalClock = defineObject(tabletopDigitalClock_schema, {
 	createInstance: ({ sr, options, model, timer }) => {
diff --git a/packages/frontend-misskey-world-engine/src/room/previewEngine.ts b/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
index 325cff2095..297634b381 100644
--- a/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
+++ b/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
@@ -7,7 +7,8 @@ import * as BABYLON from '@babylonjs/core';
 import { registerBuiltInLoaders } from '@babylonjs/loaders/dynamic.js';
 import { GridMaterial } from '@babylonjs/materials';
 import { cm, WORLD_SCALE } from 'misskey-world/src/utility.js';
-import { camelToKebab, getMeshesBoundingBox, ArcRotateCameraManualInput } from '../utility.js';
+import { camelToKebab } from 'misskey-world/src/utility.js';
+import { getMeshesBoundingBox, ArcRotateCameraManualInput } from '../utility.js';
 import { EngineBase } from '../EngineBase.js';
 import { getObjectDef } from './object-defs.js';
 import { SYSTEM_MESH_NAMES, GRAPHICS_QUALITY } from './utility.js';