diff --git a/masque/file/dxf.py b/masque/file/dxf.py
index 4429466..95814ef 100644
--- a/masque/file/dxf.py
+++ b/masque/file/dxf.py
@@ -200,9 +200,9 @@ def _read_block(block, clean_vertices: bool) -> Pattern:
         eltype = element.dxftype()
         if eltype in ('POLYLINE', 'LWPOLYLINE'):
             if eltype == 'LWPOLYLINE':
-                points = numpy.array(element.lwpoints)
+                points = numpy.array(tuple(element.lwpoints()))
             else:
-                points = numpy.array(element.points)
+                points = numpy.array(tuple(element.points()))
             attr = element.dxfattribs()
             args = {'layer': attr.get('layer', DEFAULT_LAYER),
                    }