diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index a7c522ca..c3e323b2 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -26,6 +26,7 @@ import {
   isCameraRigRailPlacementMode,
   isCameraRigTransitionMode,
   isNpcPresenceMode,
+  isNpcTargetAnchorMode,
   isPlayerStartColliderMode,
   isPlayerStartGamepadActionBinding,
   isPlayerStartGamepadCameraLookBinding,