diff --git a/masque/file/gdsii_arrow.py b/masque/file/gdsii_arrow.py
index 5240da9..e56a48e 100644
--- a/masque/file/gdsii_arrow.py
+++ b/masque/file/gdsii_arrow.py
@@ -1,3 +1,4 @@
+# ruff: noqa: ARG001, F401
 """
 GDSII file format readers and writers using the `TODO` library.
 
@@ -380,8 +381,8 @@ def _boundaries_to_polygons(
 
     zeros = numpy.zeros((elem_count, 2))
     raw_mode = global_args['raw_mode']
-    for layer_ind, ff, cc in zip(unilayer_inds, unilayer_first, unilayer_count, strict=True):
-        ee_inds = order[ff:ff + cc]
+    for layer_ind, ff, nn in zip(unilayer_inds, unilayer_first, unilayer_count, strict=True):
+        ee_inds = order[ff:ff + nn]
         layer = layer_tups[layer_ind]
         propless_mask = prop_counts[ee_inds] == 0