diff --git a/docs/tutorials/finetune.md b/docs/tutorials/finetune.md
index d6541a0cb9f0e5c98e6be7fa6ad21aa7ff207c3e..db051e45ff1cae6d85503c7943b45c4b91bd4744 100644
--- a/docs/tutorials/finetune.md
+++ b/docs/tutorials/finetune.md
@@ -34,8 +34,10 @@ model = dict(
             fc_out_channels=1024,
             roi_feat_size=7,
             num_classes=8,
-            target_means=[0., 0., 0., 0.],
-            target_stds=[0.1, 0.1, 0.2, 0.2],
+            bbox_coder=dict(
+                type='DeltaXYWHBBoxCoder',
+                target_means=[0., 0., 0., 0.],
+                target_stds=[0.1, 0.1, 0.2, 0.2]),
             reg_class_agnostic=False,
             loss_cls=dict(
                 type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0),