diff --git a/README.md b/README.md
index 609b733..49c7754 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ when --mode is `custom`:
 
 ### Example
 
-`fawkes -d ./imgs --mode mid`
+`fawkes -d ./imgs --mode low`
 
 ### Tips
 - The perturbation generation takes ~60 seconds per image on a CPU machine, and it would be much faster on a GPU machine. Use `batch-size=1` on CPU and `batch-size>1` on GPUs.