diff --git a/pytorch3d/ops/interp_face_attrs.py b/pytorch3d/ops/interp_face_attrs.py
index f72ea82f..56d04dd7 100644
--- a/pytorch3d/ops/interp_face_attrs.py
+++ b/pytorch3d/ops/interp_face_attrs.py
@@ -52,6 +52,7 @@ def interpolate_face_attributes(
     pix_to_face = pix_to_face.view(-1)
     barycentric_coords = barycentric_coords.view(N * H * W * K, 3)
     args = (pix_to_face, barycentric_coords, face_attributes)
+    # pyre-fixme[16]: `_InterpFaceAttrs` has no attribute `apply`.
     out = _InterpFaceAttrs.apply(*args)
     out = out.view(N, H, W, K, -1)
     return out
@@ -89,6 +90,7 @@ def interpolate_face_attributes_python(
     pix_to_face = pix_to_face.clone()
     pix_to_face[mask] = 0
     idx = pix_to_face.view(N * H * W * K, 1, 1).expand(N * H * W * K, 3, D)
+    # pyre-fixme[16]: `Tensor` has no attribute `gather`.
     pixel_face_vals = face_attributes.gather(0, idx).view(N, H, W, K, 3, D)
     pixel_vals = (barycentric_coords[..., None] * pixel_face_vals).sum(dim=-2)
     pixel_vals[mask] = 0  # Replace masked values in output.