diff --git a/esphome/core/util.cpp b/esphome/core/util.cpp
index ea5e347c72..867ba8421b 100644
--- a/esphome/core/util.cpp
+++ b/esphome/core/util.cpp
@@ -62,6 +62,7 @@ void network_setup_mdns(IPAddress address, int interface) {
       // DNS-SD (!=mDNS !) requires at least one TXT record for service discovery - let's add version
       MDNS.addServiceTxt("esphomelib", "tcp", "version", ESPHOME_VERSION);
       MDNS.addServiceTxt("esphomelib", "tcp", "address", network_get_address().c_str());
+      MDNS.addServiceTxt("esphomelib", "tcp", "mac", get_mac_address().c_str());
     } else {
 #endif
       // Publish "http" service if not using native API.