diff --git a/docs/usage.md b/docs/usage.md
index 7b06846c565281ede2dab7bc5d40eaa1eb607941..4a076974fc260b7a4dc4aefe98607117c3b9dbdc 100644
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -77,7 +77,6 @@ python pdseg/train.py --use_gpu \
                       --cfg configs/unet_pet.yaml \
                       BATCH_SIZE 4 \
                       TRAIN.PRETRAINED_MODEL_DIR pretrained_model/unet_bn_coco \
-                      TRAIN.SYNC_BATCH_NORM True \
                       SOLVER.LR 5e-5
 ```