diff --git a/configs/yolov3_darknet.yml b/configs/yolov3_darknet.yml
index 22ae6d91429dc8101abcc60736f0d065cc04efee..2ea5ba7bde24d964129a01bec5289dd129564a9d 100644
--- a/configs/yolov3_darknet.yml
+++ b/configs/yolov3_darknet.yml
@@ -37,7 +37,7 @@ YOLOv3Head:
 YOLOv3Loss:
   batch_size: 8
   ignore_thresh: 0.7
-  label_smooth: false
+  label_smooth: true
 
 LearningRate:
   base_lr: 0.001
diff --git a/configs/yolov3_darknet_voc.yml b/configs/yolov3_darknet_voc.yml
index f8ff843bb28a0afdf5188616233515cb0e8cfdc7..241d12934b8420977eda791245d9c946a43e44a4 100644
--- a/configs/yolov3_darknet_voc.yml
+++ b/configs/yolov3_darknet_voc.yml
@@ -38,7 +38,7 @@ YOLOv3Head:
 YOLOv3Loss:
   batch_size: 8
   ignore_thresh: 0.7
-  label_smooth: true
+  label_smooth: false
 
 LearningRate:
   base_lr: 0.001
diff --git a/configs/yolov3_mobilenet_v1.yml b/configs/yolov3_mobilenet_v1.yml
index e27900b8bae728954ad0be35f6eefba082f1e194..a66b26c72e679bc83f4049dc47ef0745a6e5f981 100644
--- a/configs/yolov3_mobilenet_v1.yml
+++ b/configs/yolov3_mobilenet_v1.yml
@@ -38,7 +38,7 @@ YOLOv3Head:
 YOLOv3Loss:
   batch_size: 8
   ignore_thresh: 0.7
-  label_smooth: false
+  label_smooth: true
 
 LearningRate:
   base_lr: 0.001
diff --git a/configs/yolov3_mobilenet_v1_voc.yml b/configs/yolov3_mobilenet_v1_voc.yml
index 44cc9ed6fc941b046ed2c765772ec303984289d5..2ce5e40bfde9a06ebc4c1cf848627f9d5df0ed5a 100644
--- a/configs/yolov3_mobilenet_v1_voc.yml
+++ b/configs/yolov3_mobilenet_v1_voc.yml
@@ -72,7 +72,6 @@ TrainReader:
 
 EvalReader:
   inputs_def:
-    image_shape: [3, 608, 608]
     fields: ['image', 'im_size', 'im_id', 'gt_bbox', 'gt_class', 'is_difficult']
     num_max_boxes: 50
   dataset:
diff --git a/configs/yolov3_r34.yml b/configs/yolov3_r34.yml
index 765190802f3f85ac172ab6a8e3ba54ab54da347c..4cc05f24d98b7caf996de8b7db9532447a4adcd1 100644
--- a/configs/yolov3_r34.yml
+++ b/configs/yolov3_r34.yml
@@ -40,7 +40,7 @@ YOLOv3Head:
 YOLOv3Loss:
   batch_size: 8
   ignore_thresh: 0.7
-  label_smooth: false
+  label_smooth: true
 
 LearningRate:
   base_lr: 0.001
diff --git a/configs/yolov3_r34_voc.yml b/configs/yolov3_r34_voc.yml
index 8022ffd1605e593996d6ff3cb8e2d28c71c749cf..f1cb5a4a2b75463e0aef58892788d13a1890a14f 100644
--- a/configs/yolov3_r34_voc.yml
+++ b/configs/yolov3_r34_voc.yml
@@ -74,7 +74,6 @@ TrainReader:
 
 EvalReader:
   inputs_def:
-    image_shape: [3, 608, 608]
     fields: ['image', 'im_size', 'im_id', 'gt_bbox', 'gt_class', 'is_difficult']
     num_max_boxes: 50
   dataset: