diff --git a/pkg/addon/utils.go b/pkg/addon/utils.go
index 85e98e619..9a0f0d5cf 100644
--- a/pkg/addon/utils.go
+++ b/pkg/addon/utils.go
@@ -229,8 +229,10 @@ func IsVersionRegistry(r Registry) bool {
 	return r.Helm != nil
 }
 
+// InstallOption define additional option for installation
 type InstallOption func(installer *Installer)
 
+// SkipValidateVersion means skip validating system version
 func SkipValidateVersion(installer *Installer) {
 	installer.skipVersionValidate = true
 }