diff --git a/src/pages/XRSession.tsx b/src/pages/XRSession.tsx
index 4607bce..23b0d01 100644
--- a/src/pages/XRSession.tsx
+++ b/src/pages/XRSession.tsx
@@ -378,6 +378,10 @@ function XRGrid() {
 const XRSession = () => {
   const navigate = useNavigate();
   const { model, anchorMode, setAnchorMode } = useModelStore();
+  const isActiveLocked = useModelStore((s) => {
+    const a = s.models.find(m => m.id === s.activeModelId);
+    return !!a?.locked;
+  });
   const [inXR, setInXR] = useState(false);
   const [freeMove, setFreeMove] = useState(true);
   const [placementMode, setPlacementMode] = useState(true); // start in placement mode