diff --git a/embed/config.go b/embed/config.go
index db35e84cbb74..cc785b9c376b 100644
--- a/embed/config.go
+++ b/embed/config.go
@@ -371,11 +371,13 @@ func (cfg Config) IsDefaultHost() (string, error) {
 }
 
 // UpdateDefaultClusterFromName updates cluster advertise URLs with default host.
+// Empty 'acurl' means that user did not specify the advertise client URL,
+// and default host has been used, so there's no need to overwrite cfg.ACURLs.
 // TODO: check whether fields are set instead of whether fields have default value
-func (cfg *Config) UpdateDefaultClusterFromName(defaultInitialCluster string) {
+func (cfg *Config) UpdateDefaultClusterFromName(acurl string, defaultInitialCluster string) {
 	defaultHost, defaultHostErr := cfg.IsDefaultHost()
 	defaultHostOverride := defaultHost == "" || defaultHostErr == nil
-	if (defaultHostOverride || cfg.Name != DefaultName) && cfg.InitialCluster == defaultInitialCluster {
+	if acurl != "" && (defaultHostOverride || cfg.Name != DefaultName) && cfg.InitialCluster == defaultInitialCluster {
 		cfg.InitialCluster = cfg.InitialClusterFromName(cfg.Name)
 		ip, _, _ := net.SplitHostPort(cfg.LCUrls[0].Host)
 		// if client-listen-url is 0.0.0.0, just use detected default host