@@ -1104,8 +1104,8 @@ class XDotParser(DotParser):

             return

         x, y = self.parse_node_pos(pos)

-        w = float(attrs['width'])*72

-        h = float(attrs['height'])*72

+        w = float(attrs.get('width', 0))*72

+        h = float(attrs.get('height', 0))*72

         shapes = []

         for attr in ("_draw_", "_ldraw_"):

             if attr in attrs: