diff --git a/packages/frontend-misskey-world-engine/src/babylonRuntime.ts b/packages/frontend-misskey-world-engine/src/babylonRuntime.ts
index 0665a7e5d4..551713511b 100644
--- a/packages/frontend-misskey-world-engine/src/babylonRuntime.ts
+++ b/packages/frontend-misskey-world-engine/src/babylonRuntime.ts
@@ -28,6 +28,7 @@ export function registerBabylonRuntime(): void {
 	BABYLON.RegisterAnimation();
 	BABYLON.RegisterAnimatable();
 	BABYLON.RegisterCollisionCoordinator();
+	BABYLON.RegisterInstancedMesh();
 	BABYLON.RegisterPostProcessRenderPipelineManagerSceneComponent(
 		BABYLON.PostProcessRenderPipelineManager,
 	);