diff --git a/pytential/linalg/skeletonization.py b/pytential/linalg/skeletonization.py
index 5bf0557d5..cb8b916c8 100644
--- a/pytential/linalg/skeletonization.py
+++ b/pytential/linalg/skeletonization.py
@@ -399,7 +399,7 @@ def make_skeletonization_wrangler(
     try:
         lpot_exprs = list(exprs)
     except TypeError:
-        lpot_exprs = [exprs]
+        lpot_exprs = [exprs]  # type: ignore[list-item]
 
     try:
         input_exprs = list(input_exprs)
@@ -796,8 +796,7 @@ def skeletonize_by_proxy(
     skels: np.ndarray = np.empty((wrangler.nrows, wrangler.ncols), dtype=object)
     for ibrow in range(wrangler.nrows):
         for ibcol in range(wrangler.ncols):
-            # NOTE: type annotations for object arrays are not there yet
-            skels[ibrow, ibcol] = _skeletonize_block_by_proxy_with_mats(  # type: ignore[call-overload]
+            skels[ibrow, ibcol] = _skeletonize_block_by_proxy_with_mats(
                     actx, ibrow, ibcol, places, proxy, wrangler, tgt_src_index,
                     id_eps=id_eps, id_rank=id_rank,
                     max_particles_in_box=max_particles_in_box)