diff --git a/pygeoif/functions.py b/pygeoif/functions.py
index d9f5190d..19cd7b75 100644
--- a/pygeoif/functions.py
+++ b/pygeoif/functions.py
@@ -44,12 +44,9 @@ def signed_area(coords: LineType) -> float:
     xs, ys = map(list, zip(*(coord[:2] for coord in coords)))
     xs.append(xs[1])  # pragma: no mutate
     ys.append(ys[1])  # pragma: no mutate
-    return (
-        sum(
-            xs[i] * (ys[i + 1] - ys[i - 1])  # type: ignore [operator]
-            for i in range(1, len(coords))
-        )
-        / 2.0
+    return cast(
+        float,
+        sum(xs[i] * (ys[i + 1] - ys[i - 1]) for i in range(1, len(coords))) / 2.0,
     )
 
 
diff --git a/pygeoif/geometry.py b/pygeoif/geometry.py
index 58ed051a..fdbe7164 100644
--- a/pygeoif/geometry.py
+++ b/pygeoif/geometry.py
@@ -955,9 +955,7 @@ def __init__(self, polygons: Sequence[PolygonType], unique: bool = False) -> Non
             tuple(
                 Polygon(
                     shell=polygon[0],
-                    holes=polygon[1]  # type: ignore [misc]
-                    if len(polygon) == 2  # noqa: PLR2004
-                    else None,
+                    holes=polygon[1] if len(polygon) == 2 else None,  # noqa: PLR2004
                 )
                 for polygon in polygons
             ),