diff --git a/variants/thinknode_m1/platformio.ini b/variants/thinknode_m1/platformio.ini
index 356edfee..617f9240 100644
--- a/variants/thinknode_m1/platformio.ini
+++ b/variants/thinknode_m1/platformio.ini
@@ -58,6 +58,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${ThinkNode_M1.build_src_filter}
diff --git a/variants/thinknode_m6/platformio.ini b/variants/thinknode_m6/platformio.ini
index 6fe90436..012afe46 100644
--- a/variants/thinknode_m6/platformio.ini
+++ b/variants/thinknode_m6/platformio.ini
@@ -63,6 +63,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${ThinkNode_M6.build_src_filter}