diff --git a/src/runtime-three/runtime-host.ts b/src/runtime-three/runtime-host.ts
index ede35674..426fc292 100644
--- a/src/runtime-three/runtime-host.ts
+++ b/src/runtime-three/runtime-host.ts
@@ -5253,7 +5253,7 @@ export class RuntimeHost {
     this.activeScheduledImpulseRoutineIds =
       syncResult.nextActiveImpulseRoutineIds;
 
-    if (syncResult.npcColliderCollectionChanged) {
+    if (syncResult.npcColliderCollectionChanged && this.sceneReady) {
       this.refreshCollisionWorldForNpcSchedule();
     }
   }