diff --git a/code/d2lzh_pytorch/utils.py b/code/d2lzh_pytorch/utils.py
index 0171e42feaf695b3ec0171f55f6a83a1099cc6ba..0e1a4b32df585c6d876eae524a7384fd25bdec77 100644
--- a/code/d2lzh_pytorch/utils.py
+++ b/code/d2lzh_pytorch/utils.py
@@ -777,7 +777,7 @@ def show_bboxes(axes, bboxes, labels=None, colors=None):
     colors = _make_list(colors, ['b', 'g', 'r', 'm', 'c'])
     for i, bbox in enumerate(bboxes):
         color = colors[i % len(colors)]
-        rect = d2l.bbox_to_rect(bbox.detach().cpu().numpy(), color)
+        rect = bbox_to_rect(bbox.detach().cpu().numpy(), color)
         axes.add_patch(rect)
         if labels and len(labels) > i:
             text_color = 'k' if color == 'w' else 'w'