diff --git a/configs/libra_rcnn/libra_retinanet_r50_fpn_1x.py b/configs/libra_rcnn/libra_retinanet_r50_fpn_1x.py
index e81aa972293..87fb6aa7bcd 100644
--- a/configs/libra_rcnn/libra_retinanet_r50_fpn_1x.py
+++ b/configs/libra_rcnn/libra_retinanet_r50_fpn_1x.py
@@ -15,7 +15,6 @@
             in_channels=[256, 512, 1024, 2048],
             out_channels=256,
             start_level=1,
-            extra_convs_on_inputs=True,
             add_extra_convs=True,
             num_outs=5),
         dict(
@@ -57,9 +56,6 @@
         neg_iou_thr=0.4,
         min_pos_iou=0,
         ignore_iof_thr=-1),
-    smoothl1_beta=0.11,
-    gamma=2.0,
-    alpha=0.25,
     allowed_border=-1,
     pos_weight=-1,
     debug=False)