diff --git a/mesh.proto b/mesh.proto
index 52481e4..c9246aa 100644
--- a/mesh.proto
+++ b/mesh.proto
@@ -546,8 +546,8 @@ message MyNodeInfo {
   /// the last time we discarded preferences)
   uint32 error_count = 9;
 
-  /// How many bits are used for the packetid.  If zero it is assumed we use eight bit packetids
-  /// New device loads will user 32 bit packetid.
+  /** How many bits are used for the packetid.  If zero it is assumed we use eight bit packetids
+  Old device loads (older that 0.6.5 do not populate this field, but all newer loads do). */
   uint32 packet_id_bits = 10;
 
   /** The current ID this node is using for sending new packets (exposed so that the phone
@@ -562,8 +562,9 @@ message MyNodeInfo {
   **/
   uint32 current_packet_id = 11;
 
-  /// How many bits are used for the nodenum.  If zero it is assumed we use eight bit nodenums
-  /// New device loads will user 32 bit nodenum.
+  /** How many bits are used for the nodenum.  If zero it is assumed we use eight bit nodenums
+  New device loads will user 32 bit nodenum.
+  Old device loads (older that 0.6.5 do not populate this field, but all newer loads do). */
   uint32 node_num_bits = 12;
 
   /// FIXME - add more useful debugging state (queue depths etc)