diff --git a/pytorch3d/ops/cameras_alignment.py b/pytorch3d/ops/cameras_alignment.py
index 3b2becb8..b6575902 100644
--- a/pytorch3d/ops/cameras_alignment.py
+++ b/pytorch3d/ops/cameras_alignment.py
@@ -223,8 +223,7 @@ def _align_camera_extrinsics(
         # of centered A and centered B
         Ac = A - Amu
         Bc = B - Bmu
-        # pyre-fixme[58]: `**` is not supported for operand types `Tensor` and `int`.
-        align_t_s = (Ac * Bc).mean() / (Ac**2).mean().clamp(eps)
+        align_t_s = (Ac * Bc).mean() / torch.square(Ac).mean().clamp(eps)
     else:
         # set the scale to identity
         align_t_s = 1.0