diff --git a/src/pages/Viewer.tsx b/src/pages/Viewer.tsx
index d1282ba..6c26fba 100644
--- a/src/pages/Viewer.tsx
+++ b/src/pages/Viewer.tsx
@@ -21,7 +21,7 @@ import { convertIFCtoGLB } from "@/lib/convertIFC";
 
 const Viewer = () => {
   const navigate = useNavigate();
-  const { model, xrSupported, addModel, models, maxModels } = useModelStore();
+  const { model, xrSupported, addModel, models, maxModels, scaleRatio } = useModelStore();
   const fileInputRef = useRef<HTMLInputElement>(null);
   const [converting, setConverting] = useState(false);