diff --git a/src/mesh/NodeDB.cpp b/src/mesh/NodeDB.cpp
index 7fe5bd6568..2af85e4f52 100644
--- a/src/mesh/NodeDB.cpp
+++ b/src/mesh/NodeDB.cpp
@@ -852,12 +852,12 @@ void NodeDB::installDefaultDeviceState()
 #ifdef USERPREFS_CONFIG_OWNER_LONG_NAME
     snprintf(owner.long_name, sizeof(owner.long_name), USERPREFS_CONFIG_OWNER_LONG_NAME);
 #else
-    snprintf(owner.long_name, sizeof(owner.long_name), "Meshtastic %02x%02x", ourMacAddr[4], ourMacAddr[5]);
+    snprintf(owner.long_name, sizeof(owner.long_name), "Meshtastic %04x", getNodeNum() & 0x0ffff);
 #endif
 #ifdef USERPREFS_CONFIG_OWNER_SHORT_NAME
     snprintf(owner.short_name, sizeof(owner.short_name), USERPREFS_CONFIG_OWNER_SHORT_NAME);
 #else
-    snprintf(owner.short_name, sizeof(owner.short_name), "%02x%02x", ourMacAddr[4], ourMacAddr[5]);
+    snprintf(owner.short_name, sizeof(owner.short_name), "%04x", getNodeNum() & 0x0ffff);
 #endif
     snprintf(owner.id, sizeof(owner.id), "!%08x", getNodeNum()); // Default node ID now based on nodenum
     memcpy(owner.macaddr, ourMacAddr, sizeof(owner.macaddr));