diff --git a/common/forth_namespace_tests.fs b/common/forth_namespace_tests.fs
index efd6312..4a8da26 100644
--- a/common/forth_namespace_tests.fs
+++ b/common/forth_namespace_tests.fs
@@ -688,6 +688,9 @@ e: check-esp32-builtins
   check-files-dir-reverse
   out: dacWrite 
   out: MDNS.begin 
+  out: MDNS.addService 
+  out: MDNS.setInstanceName 
+  out: MDNS.addServiceTxt 
 ;e
 
 e: check-esp32-bindings
diff --git a/esp32/builtins.h b/esp32/builtins.h
index 74b37a6..6ce4199 100644
--- a/esp32/builtins.h
+++ b/esp32/builtins.h
@@ -425,5 +425,9 @@ static cell_t FromIP(IPAddress ip) {
 # endif
 # define OPTIONAL_MDNS_SUPPORT \
   /* mDNS */ \
-  X("MDNS.begin", MDNS_BEGIN, n0 = MDNS.begin(c0))
+  X("MDNS.begin", MDNS_BEGIN, n0 = MDNS.begin(c0) ? -1 : 0) \
+  X("MDNS.addService", MDNS_ADD_SERVICE, n0 = MDNS.addService(c2, c1, n0) ? -1 : 0; NIPn(2)) \
+  X("MDNS.setInstanceName", MDNS_SET_INSTANCE_NAME, MDNS.setInstanceName(c0); DROP) \
+  X("MDNS.addServiceTxt", MDNS_ADD_SERVICE_TXT, MDNS.addServiceTxt(c3, c2, c1, c0); DROPn(4))
+  /* alx */
 #endif
diff --git a/site/ESP32forth.html b/site/ESP32forth.html
index 507ef53..6ede5a0 100644
--- a/site/ESP32forth.html
+++ b/site/ESP32forth.html
@@ -472,7 +472,10 @@ <h5>WiFi</h5>
 
 <h5>mDNS</h5>
 <pre>
-MDNS.begin ( name-z -- )   Start multicast dns
+MDNS.begin ( hostname-z -- f )   Start multicast dns
+MDNS.setInstanceName ( name-z -- )   Set the instance (friendly) name
+MDNS.addService ( service-z protocol-z port-n -- f )   Advertise a service (such as "http") using a protocol ("tcp" or "udp") and a port number.
+MDNS.addServiceTxt ( service-z protocol-z key-z value-z -- )   Add a service key/value pair
 </pre>
 
 <h5>SPIFFS</h5>