diff --git a/How-to-install.md b/How-to-install.md
index 2628843..145aa68 100644
--- a/How-to-install.md
+++ b/How-to-install.md
@@ -64,5 +64,6 @@ Explanations :
 - `--accountemail  ` is the email used to register an account to Let's Encrypt,  you will receive a renewal notice email here.
 - `--accountkey` is the file saving your account private key.  By default, it's saved in `--config-home`.
 - `--user-agent`  is the user-agent header value used to send to Let's Encrypt.
+- `--nocron` install acme.sh without cronjob