diff --git a/make/harbor.cfg b/make/harbor.cfg
index 91b110245..28be9db98 100644
--- a/make/harbor.cfg
+++ b/make/harbor.cfg
@@ -4,6 +4,7 @@
 _version = 1.6.0
 #The IP address or hostname to access admin UI and registry service.
 #DO NOT use localhost or 127.0.0.1, because Harbor needs to be accessed by external clients.
+#DO NOT comment out this line, modify the value of "hostname" directly, or the installation will fail.
 hostname = reg.mydomain.com
 
 #The protocol for accessing the UI and token/notification service, by default it is http.