diff --git a/configs/faster_rcnn/_base_/faster_rcnn_swin_reader.yml b/configs/faster_rcnn/_base_/faster_rcnn_swin_reader.yml
index 956551c1de6905ae17e26ad742c15b51623b32ea..396462a2ff7cf68f7d91a1bb1bb87b8e5a040486 100644
--- a/configs/faster_rcnn/_base_/faster_rcnn_swin_reader.yml
+++ b/configs/faster_rcnn/_base_/faster_rcnn_swin_reader.yml
@@ -33,7 +33,7 @@ TestReader:
     image_shape: [1, 3, 640, 640]
   sample_transforms:
   - Decode: {}
-  - Resize: {interp: 2, target_size: [640, 640], keep_ratio: False}
+  - Resize: {interp: 2, target_size: [640, 640], keep_ratio: True}
   - NormalizeImage: {is_scale: true, mean: [0.485,0.456,0.406], std: [0.229, 0.224,0.225]}
   - Permute: {}
   batch_transforms: