diff --git a/tools/coordinate.py b/tools/coordinate.py
index 3a8a5cb..619eb6a 100644
--- a/tools/coordinate.py
+++ b/tools/coordinate.py
@@ -1,11 +1,10 @@
 from __future__ import annotations
 from dataclasses import dataclass
 from enum import Enum
-from math import gcd, sqrt, inf, atan2, degrees, floor
+from math import gcd, sqrt, inf, atan2, degrees
+from .math import round_half_up
 from typing import Union, List, Optional
 
-from tools.math import round_half_up
-
 
 class DistanceAlgorithm(Enum):
     MANHATTAN = 0
@@ -70,7 +69,6 @@ class Coordinate:
     def getCircle(self, radius: int = 1, algorithm: DistanceAlgorithm = DistanceAlgorithm.EUCLIDEAN,
                   minX: int = -inf, minY: int = -inf, maxX: int = inf, maxY: int = inf,
                   minZ: int = -inf, maxZ: int = inf) -> list[Coordinate]:
-        # FIXME: includeDiagonal == True returns way too few coordinates
         ret = []
         if self.z is None:  # mode 2D
             for x in range(self.x - radius * 2, self.x + radius * 2 + 1):
@@ -89,7 +87,7 @@ class Coordinate:
                         target = Coordinate(x, y)
                         if not target.inBoundaries(minX, minY, maxX, maxY, minZ, maxZ):
                             continue
-                        dist = self.getDistanceTo(target, DistanceAlgorithm.MANHATTAN, includeDiagonals=includeDiagonal)
+                        dist = round_half_up(self.getDistanceTo(target, algorithm=algorithm, includeDiagonals=False))
                         if dist == radius:
                             ret.append(target)