diff --git a/configs/rec/rec_r31_sar.yml b/configs/rec/rec_r31_sar.yml
index 7adb7136c50bbdfa764e33126bfc15f52510a9f1..053b1ae8352473cea91b03814da310b65264fdb2 100644
--- a/configs/rec/rec_r31_sar.yml
+++ b/configs/rec/rec_r31_sar.yml
@@ -56,7 +56,6 @@ Metric:
 Train:
   dataset:
     name: SimpleDataSet
-    delimiter: ' '
     label_file_list: ['./train_data/train_list.txt']
     data_dir: ./train_data/
     ratio_list: 1.0