diff --git a/src/components/three/ModelViewer.tsx b/src/components/three/ModelViewer.tsx
index e851f05..ba0effc 100644
--- a/src/components/three/ModelViewer.tsx
+++ b/src/components/three/ModelViewer.tsx
@@ -504,6 +504,9 @@ function GridAutoFollower() {
     }, 100);
     return () => clearTimeout(id);
   }, [models, scene]);
+  return null;
+}
+
 /** Mouse drag handler for desktop "Posicionar" mode: translates/rotates the active model. */
 function PositionDragHandler() {
   const { camera, gl, scene } = useThree();