diff --git a/src/components/three/XRGrabbable.tsx b/src/components/three/XRGrabbable.tsx
index cd1804b..69acba7 100644
--- a/src/components/three/XRGrabbable.tsx
+++ b/src/components/three/XRGrabbable.tsx
@@ -121,8 +121,10 @@ export function XRGrabbable({ allowScale = true, lockedActive = false, onGrabSta
 
       const d = dual.current;
       const deltaQuat = new THREE.Quaternion().setFromUnitVectors(d.startAxis, axisNow);
-      // ZOOM sempre ativo no grip duplo
-      const scaleRatio = THREE.MathUtils.clamp(distNow / d.startDist, 0.1, 10);
+      // ZOOM só quando allowScale=true. Caso contrário, mantém escala 1× (só orbita).
+      const scaleRatio = allowScale
+        ? THREE.MathUtils.clamp(distNow / d.startDist, 0.1, 10)
+        : 1;
 
       const tToOrigin = new THREE.Matrix4().makeTranslation(-d.startMid.x, -d.startMid.y, -d.startMid.z);
       const tBack = new THREE.Matrix4().makeTranslation(midNow.x, midNow.y, midNow.z);