diff --git a/docs/inference.md b/docs/inference.md
index d7bc21b..a32e49b 100755
--- a/docs/inference.md
+++ b/docs/inference.md
@@ -52,7 +52,7 @@ Assume that you have already downloaded the checkpoints to the directory `checkp
     ```shell
     python tools/test.py configs/pspnet/pspnet_r50-d8_512x1024_20k_voc12aug.py \
         checkpoints/pspnet_r50-d8_512x1024_20k_voc12aug_20200605_003338-c57ef100.pth \
-        --eval mAP
+        --eval mIoU
     ```
 
 4. Test PSPNet with 4 GPUs, and evaluate the standard mIoU and cityscapes metric.