diff --git a/说明.md b/说明.md
index 1eb6c56..7df13ed 100644
--- a/说明.md
+++ b/说明.md
@@ -114,7 +114,7 @@ acme.sh  --issue   -d  mydomain2.com   --dns  dns_dp
 ```
 acme.sh  --installcert  -d  mydomain.com   \
         --keypath   /etc/nginx/ssl/mydomain.key \
-        --certpath  /etc/nginx/ssl/mydonain.cer \
+        --fullchainpath /etc/nginx/ssl/mydonain.cer \
         --reloadcmd  "service nginx force-reload"
 ```