diff --git a/map.py b/map.py
index aa3067c..c76b82b 100644
--- a/map.py
+++ b/map.py
@@ -156,6 +156,7 @@ def main():
     zoom_scale: float = 0.
 
     def get_map_raw_coords(lon: float, lat: float) -> tuple[int, int]:
+        nonlocal zoom_scale
         return (
             int(zoom_scale * math.radians(lon)),
             int(zoom_scale * math.log(math.tan(math.pi / 4 + math.radians(lat) / 2)))
@@ -167,7 +168,7 @@ def main():
     #         math.degrees(2 * math.atan(math.exp(y / zoom_scale)) - math.pi / 2.)
     #     )
 
-    zoom_level = 1 + int(-math.log2(((bounds.maxlon - bounds.minlon) * 2 * math.pi) / map_target_width))
+    zoom_level = math.ceil(-math.log2(((bounds.maxlon - bounds.minlon) * 2 * math.pi) / map_target_width))
     zoom_scale = (2**zoom_level * map_target_width) / (2 * math.pi)
     min_x, min_y = get_map_raw_coords(bounds.minlon, bounds.minlat)
     max_x, max_y = get_map_raw_coords(bounds.maxlon, bounds.maxlat)
@@ -193,9 +194,10 @@ def main():
             node = nodes[node_id]
             new_coord = get_map_coords(node.lon, node.lat)
             # print(f'{new_coord=}')
-            if len(coords) < 2 or new_coord != coords[-1]:
+            if not coords or new_coord != coords[-1]:
                 coords.append(new_coord)
-        draw.polygon(coords, fill=color, outline=outline, width=width)
+        if len(coords) > 2:  # noqa: PLR2004
+            draw.polygon(coords, fill=color, outline=outline, width=width)
 
     def draw_way_line(way: Way, width: int, color: tuple[int, ...] | str, joint: str | None = None):
         nonlocal bounds, draw, map_height, map_width, nodes
@@ -204,9 +206,10 @@ def main():
             node = nodes[node_id]
             new_coord = get_map_coords(node.lon, node.lat)
             # print(f'{new_coord=}')
-            if len(coords) < 2 or new_coord != coords[-1]:
+            if not coords or new_coord != coords[-1]:
                 coords.append(new_coord)
-        draw.line(coords, width=width, fill=color, joint=joint)
+        if len(coords) > 1:
+            draw.line(coords, width=width, fill=color, joint=joint)
 
     for relation in relations.values():
         if 'natural' in relation.tags and relation.tags['natural'] == 'wood':