diff --git a/src/pages/Viewer.tsx b/src/pages/Viewer.tsx
index 3a8a672..b3b9bc8 100644
--- a/src/pages/Viewer.tsx
+++ b/src/pages/Viewer.tsx
@@ -16,6 +16,7 @@ import { toast } from "sonner";
 import { ScrollArea } from "@/components/ui/scroll-area";
 import { Separator } from "@/components/ui/separator";
 import { getSupportedExtension, convertToGLB, ACCEPTED_EXTENSIONS } from "@/lib/convertToGLB";
+import { validateModelFile } from "@/lib/validateModelFile";
 import { convertIFCtoGLB } from "@/lib/convertIFC";
 
 const Viewer = () => {