diff --git a/readme.md b/readme.md
index a9063b5..1f51ee1 100755
--- a/readme.md
+++ b/readme.md
@@ -90,7 +90,7 @@ ran -p=8888
 Example 2: Set root to /tmp, list files of directories and set a custom 404 page:
 
 ```bash
-ran -p=/tmp -l=true -404=/404.html
+ran -r=/tmp -l=true -404=/404.html
 ```
 
 Example 3: Turn off gzip compression, set access username and password: