diff --git a/pytorch3d/implicitron/models/visualization/render_flyaround.py b/pytorch3d/implicitron/models/visualization/render_flyaround.py
index 2a3afadb..a3164c13 100644
--- a/pytorch3d/implicitron/models/visualization/render_flyaround.py
+++ b/pytorch3d/implicitron/models/visualization/render_flyaround.py
@@ -304,6 +304,7 @@ def _show_predictions(
     pred_all = []
     # Randomly choose a subset of the rendered images, sort by ordr in the sequence
     n_samples = min(n_samples, len(preds))
+    # pyre-fixme[20]: Argument `k` expected.
     pred_idx = sorted(random.sample(list(range(len(preds))), n_samples))
     for predi in pred_idx:
         # Make the concatentation for the same camera vertically