diff --git a/src/components/three/XRHudInWorld.tsx b/src/components/three/XRHudInWorld.tsx
index 48f5bbe..d25dc86 100644
--- a/src/components/three/XRHudInWorld.tsx
+++ b/src/components/three/XRHudInWorld.tsx
@@ -63,6 +63,7 @@ export function XRHudInWorld(props: XRHudInWorldProps) {
 
   const panelRef = useRef<THREE.Group>(null);
   const wristRef = useRef<THREE.Group>(null);
+  const headLockRef = useRef<THREE.Group>(null);
   const targetPos = useRef(new THREE.Vector3());
   const targetQuat = useRef(new THREE.Quaternion());
   const lastABtn = useRef(false);