diff --git a/pytorch3d/ops/utils.py b/pytorch3d/ops/utils.py
index 3b33b708..4d937ae1 100644
--- a/pytorch3d/ops/utils.py
+++ b/pytorch3d/ops/utils.py
@@ -137,7 +137,11 @@ def convert_pointclouds_to_tensor(pcl: Union[torch.Tensor, "Pointclouds"]):
     elif torch.is_tensor(pcl):
         X = pcl
         num_points = X.shape[1] * torch.ones(  # type: ignore
-            X.shape[0], device=X.device, dtype=torch.int64
+            # pyre-fixme[16]: Item `Pointclouds` of `Union[Pointclouds, Tensor]` has
+            #  no attribute `shape`.
+            X.shape[0],
+            device=X.device,
+            dtype=torch.int64,
         )
     else:
         raise ValueError(
diff --git a/pytorch3d/renderer/blending.py b/pytorch3d/renderer/blending.py
index 86d59db9..f2afe8aa 100644
--- a/pytorch3d/renderer/blending.py
+++ b/pytorch3d/renderer/blending.py
@@ -214,6 +214,8 @@ def softmax_rgb_blend(
         # pyre-fixme[16]
         zfar = zfar[:, None, None, None]
     if torch.is_tensor(znear):
+        # pyre-fixme[16]: Item `float` of `Union[float, Tensor]` has no attribute
+        #  `__getitem__`.
         znear = znear[:, None, None, None]
 
     z_inv = (zfar - fragments.zbuf) / (zfar - znear) * mask