diff --git a/configs/h2rbox_v2/README.md b/configs/h2rbox_v2/README.md
index a93c70af4..790da6210 100644
--- a/configs/h2rbox_v2/README.md
+++ b/configs/h2rbox_v2/README.md
@@ -44,7 +44,7 @@ HRSC
 
 ```
 @inproceedings{yu2023h2rboxv2,
-title={H2RBox-v2: Incorporating Symmetry for Boosting Horizontal Box Supervised Oriented Object Detection}, 
+title={H2RBox-v2: Incorporating Symmetry for Boosting Horizontal Box Supervised Oriented Object Detection},
 author={Yi Yu and Xue Yang and Qingyun Li and Yue Zhou and Gefan Zhang and Feipeng Da and Junchi Yan},
 year={2023},
 booktitle={Advances in Neural Information Processing Systems}