diff --git a/cura/Arranging/ShapeArray.py b/cura/Arranging/ShapeArray.py
index 6ef92b1743..68be9a6478 100644
--- a/cura/Arranging/ShapeArray.py
+++ b/cura/Arranging/ShapeArray.py
@@ -29,12 +29,10 @@ class ShapeArray:
         offset_x = int(numpy.amin(flip_vertices[:, 1]))
         flip_vertices[:, 0] = numpy.add(flip_vertices[:, 0], -offset_y)
         flip_vertices[:, 1] = numpy.add(flip_vertices[:, 1], -offset_x)
-        flip_vertices = numpy.ceil(flip_vertices)
-        shape = [int(numpy.amax(flip_vertices[:, 0])), int(numpy.amax(flip_vertices[:, 1]))]
-        if shape == [0, 0]:
-            shape = [1, 1]
+        shape = numpy.array([int(numpy.amax(flip_vertices[:, 0])), int(numpy.amax(flip_vertices[:, 1]))])
+        shape[numpy.where(shape == 0)] = 1
         arr = cls.arrayFromPolygon(shape, flip_vertices)
-        if not numpy.any(arr):
+        if not numpy.ndarray.any(arr):
             # set at least 1 pixel
             arr[0][0] = 1
         return cls(arr, offset_x, offset_y)