diff --git a/pytorch3d/io/ply_io.py b/pytorch3d/io/ply_io.py
index d7070ab8..a1885915 100644
--- a/pytorch3d/io/ply_io.py
+++ b/pytorch3d/io/ply_io.py
@@ -839,8 +839,10 @@ def _get_verts_column_indices(
         color_scale = 1.0 / 255
     return (
         point_idxs,
+        # pyre-fixme[22]: The cast is redundant.
         None if None in color_idxs else cast(List[int], color_idxs),
         color_scale,
+        # pyre-fixme[22]: The cast is redundant.
         None if None in normal_idxs else cast(List[int], normal_idxs),
     )
 
diff --git a/pytorch3d/renderer/camera_conversions.py b/pytorch3d/renderer/camera_conversions.py
index 663537a5..88c1426e 100644
--- a/pytorch3d/renderer/camera_conversions.py
+++ b/pytorch3d/renderer/camera_conversions.py
@@ -79,6 +79,7 @@ def _opencv_from_cameras_projection(
     scale = scale.expand(-1, 2)
     c0 = (image_size_wh - 1) / 2.0
 
+    # pyre-fixme[29]: `Union[BoundMethod[typing.Callable(torch.Tensor.__neg__)[[Named...
     principal_point = -p0_pytorch3d * scale + c0
     focal_length = focal_pytorch3d * scale