diff --git a/mqtt_client.c b/mqtt_client.c
index 17e78fa..7ee0126 100644
--- a/mqtt_client.c
+++ b/mqtt_client.c
@@ -300,10 +300,10 @@ esp_mqtt_client_handle_t esp_mqtt_client_init(const esp_mqtt_client_config_t *co
         esp_transport_ssl_set_cert_data(ssl, config->cert_pem, strlen(config->cert_pem));
     }
     if (config->client_cert_pem) {
-        transport_ssl_set_client_cert_data(ssl, config->client_cert_pem, strlen(config->client_cert_pem));
+        esp_transport_ssl_set_client_cert_data(ssl, config->client_cert_pem, strlen(config->client_cert_pem));
     }
     if (config->client_key_pem) {
-        transport_ssl_set_client_key_data(ssl, config->client_key_pem, strlen(config->client_key_pem));
+        esp_transport_ssl_set_client_key_data(ssl, config->client_key_pem, strlen(config->client_key_pem));
     }
     esp_transport_list_add(client->transport_list, ssl, "mqtts");
     if (config->transport == MQTT_TRANSPORT_OVER_SSL) {