diff --git a/examples/simple_repeater/MyMesh.cpp b/examples/simple_repeater/MyMesh.cpp
index ca2ee828..d02d1776 100644
--- a/examples/simple_repeater/MyMesh.cpp
+++ b/examples/simple_repeater/MyMesh.cpp
@@ -703,8 +703,8 @@ MyMesh::MyMesh(mesh::MainBoard &board, mesh::Radio &radio, mesh::MillisecondCloc
   _prefs.bw = LORA_BW;
   _prefs.cr = LORA_CR;
   _prefs.tx_power_dbm = LORA_TX_POWER;
-  _prefs.advert_interval = 1;        // default to 2 minutes for NEW installs
-  _prefs.flood_advert_interval = 12; // 12 hours
+  _prefs.advert_interval = DEF_LOCAL_ADVERT_INTERVAL;
+  _prefs.flood_advert_interval = DEF_FLOOD_ADVERT_INTERVAL;
   _prefs.flood_max = 64;
   _prefs.interference_threshold = 0; // disabled
 
diff --git a/examples/simple_room_server/MyMesh.cpp b/examples/simple_room_server/MyMesh.cpp
index 481decce..63e2ea81 100644
--- a/examples/simple_room_server/MyMesh.cpp
+++ b/examples/simple_room_server/MyMesh.cpp
@@ -611,8 +611,8 @@ MyMesh::MyMesh(mesh::MainBoard &board, mesh::Radio &radio, mesh::MillisecondCloc
   _prefs.cr = LORA_CR;
   _prefs.tx_power_dbm = LORA_TX_POWER;
   _prefs.disable_fwd = 1;
-  _prefs.advert_interval = 1;        // default to 2 minutes for NEW installs
-  _prefs.flood_advert_interval = 12; // 12 hours
+  _prefs.advert_interval = DEF_LOCAL_ADVERT_INTERVAL;
+  _prefs.flood_advert_interval = DEF_FLOOD_ADVERT_INTERVAL;
   _prefs.flood_max = 64;
   _prefs.interference_threshold = 0; // disabled
 #ifdef ROOM_PASSWORD
diff --git a/examples/simple_sensor/SensorMesh.cpp b/examples/simple_sensor/SensorMesh.cpp
index e7e12296..fdae849b 100644
--- a/examples/simple_sensor/SensorMesh.cpp
+++ b/examples/simple_sensor/SensorMesh.cpp
@@ -718,7 +718,7 @@ SensorMesh::SensorMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::Millise
   _prefs.bw = LORA_BW;
   _prefs.cr = LORA_CR;
   _prefs.tx_power_dbm = LORA_TX_POWER;
-  _prefs.advert_interval = 1;  // default to 2 minutes for NEW installs
+  _prefs.advert_interval = DEF_LOCAL_ADVERT_INTERVAL;
   _prefs.flood_advert_interval = 0;   // disabled
   _prefs.disable_fwd = true;
   _prefs.flood_max = 64;
diff --git a/platformio.ini b/platformio.ini
index b19cd5ea..b21ae795 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -50,8 +50,12 @@ build_flags = -w -DNDEBUG
   ;
   -D MIN_LOCAL_ADVERT_INTERVAL=60
   -D MAX_LOCAL_ADVERT_INTERVAL=240
+  -D DEF_LOCAL_ADVERT_INTERVAL=1    ; default to 2 minutes for NEW installs
   -D MIN_FLOOD_ADVERT_INTERVAL=3
   -D MAX_FLOOD_ADVERT_INTERVAL=48
+  -D DEF_FLOOD_ADVERT_INTERVAL=12   ; default to 12 hours for NEW installs
+  ; -D NO_BOOT_ADVERT=1 ; disable boot advertisement
+  ; -D STEALTH_MODE=1   ; disable all advertisements and DISCOVER_REQ
 build_src_filter =
   +<*.cpp>
   +<helpers/*.cpp>