diff --git a/UM/Math/Polygon.py b/UM/Math/Polygon.py
index 634f54584..2fb3efbe4 100644
--- a/UM/Math/Polygon.py
+++ b/UM/Math/Polygon.py
@@ -172,7 +172,7 @@ def scale(self, factor: float, origin: Optional[List[float]] = None) -> "Polygon
         transformation[2][1] = delta_scale * -origin[1]
 
         # Apply that affine transformation to the point data.
-        point_data = numpy.lib.pad(self._points, ((0, 0), (0, 1)), "constant", constant_values = (1))  # Turn 3D to do an affine transformation.
+        point_data = numpy.pad(self._points, ((0, 0), (0, 1)), "constant", constant_values = (1))  # Turn 3D to do an affine transformation.
         point_data = point_data.dot(transformation)
 
         return Polygon(point_data[:, :-1])  # Leave out the affine component.