diff --git a/include/neuron/connection/mqtt_client.h b/include/neuron/connection/mqtt_client.h
index d5bfc048..4462962c 100644
--- a/include/neuron/connection/mqtt_client.h
+++ b/include/neuron/connection/mqtt_client.h
@@ -78,8 +78,8 @@ int neu_mqtt_client_set_connect_cb(neu_mqtt_client_t *             client,
 int neu_mqtt_client_set_disconnect_cb(neu_mqtt_client_t *             client,
                                       neu_mqtt_client_connection_cb_t cb,
                                       void *                          data);
-int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
-                            const char *ca, const char *cert, const char *key,
+int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, const char *ca,
+                            const char *cert, const char *key,
                             const char *keypass);
 int neu_mqtt_client_set_cache_size(neu_mqtt_client_t *client,
                                    size_t mem_size_bytes, size_t db_size_bytes);
diff --git a/plugins/monitor/monitor.c b/plugins/monitor/monitor.c
index d2afa870..902b85b8 100644
--- a/plugins/monitor/monitor.c
+++ b/plugins/monitor/monitor.c
@@ -151,8 +151,8 @@ static int config_mqtt_client(neu_plugin_t *plugin, neu_mqtt_client_t *client,
     }
 
     // when config->ca is NULL tls will be disabled
-    rv = neu_mqtt_client_set_tls(client, true, config->ca, config->cert,
-                                 config->key, config->keypass);
+    rv = neu_mqtt_client_set_tls(client, config->ca, config->cert, config->key,
+                                 config->keypass);
     if (0 != rv) {
         plog_error(plugin, "neu_mqtt_client_set_tsl fail");
         return -1;
diff --git a/plugins/mqtt/mqtt_plugin.c b/plugins/mqtt/mqtt_plugin.c
index c2e622b6..b3c2f083 100644
--- a/plugins/mqtt/mqtt_plugin.c
+++ b/plugins/mqtt/mqtt_plugin.c
@@ -146,8 +146,8 @@ static int config_mqtt_client(neu_plugin_t *plugin, neu_mqtt_client_t *client,
     }
 
     // when config->ca is NULL tls will be disabled
-    rv = neu_mqtt_client_set_tls(client, true, config->ca, config->cert,
-                                 config->key, config->keypass);
+    rv = neu_mqtt_client_set_tls(client, config->ca, config->cert, config->key,
+                                 config->keypass);
     if (0 != rv) {
         plog_error(plugin, "neu_mqtt_client_set_tsl fail");
         return -1;
diff --git a/src/connection/mqtt_client.c b/src/connection/mqtt_client.c
index 9fb89c85..754d2ea1 100644
--- a/src/connection/mqtt_client.c
+++ b/src/connection/mqtt_client.c
@@ -1005,8 +1005,8 @@ int neu_mqtt_client_set_disconnect_cb(neu_mqtt_client_t *             client,
     return 0;
 }
 
-int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
-                            const char *ca, const char *cert, const char *key,
+int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, const char *ca,
+                            const char *cert, const char *key,
                             const char *keypass)
 {
     int             rv  = 0;
@@ -1015,7 +1015,7 @@ int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
     nng_mtx_lock(client->mtx);
     return_failure_if_open();
 
-    if (!enabled) {
+    if (NULL == ca) {
         // disable tls
         log(debug, "tls disabled");
         if (client->tls_cfg) {
@@ -1025,12 +1025,6 @@ int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
         goto end;
     }
 
-    if (NULL == client->host) {
-        log(error, "no client host");
-        rv = -1;
-        goto end;
-    }
-
     if (client->tls_cfg) {
         cfg = client->tls_cfg;
     } else {
@@ -1043,12 +1037,6 @@ int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
         client->tls_cfg = cfg;
     }
 
-    if (0 != (rv = nng_tls_config_server_name(client->tls_cfg, client->host))) {
-        log(error, "nng_tls_config_server_name fail: %s", nng_strerror(rv));
-        rv = -1;
-        goto end;
-    }
-
     if (cert != NULL && key != NULL) {
         if ((rv = nng_tls_config_auth_mode(cfg, NNG_TLS_AUTH_MODE_REQUIRED)) !=
             0) {
@@ -1069,7 +1057,7 @@ int neu_mqtt_client_set_tls(neu_mqtt_client_t *client, bool enabled,
         }
     }
 
-    if (ca && (rv = nng_tls_config_ca_chain(cfg, ca, NULL)) != 0) {
+    if ((rv = nng_tls_config_ca_chain(cfg, ca, NULL)) != 0) {
         log(error, "nng_tls_config_ca_chain fail: %s", nng_strerror(rv));
         rv = -1;
     }