Index: firmware/App/Services/MsgQueues.h
===================================================================
diff -u -r9864b14f76782f1e68bf266dcd843451748715a0 -r9a9d04b84f4345fca87fb14d26f09d497b08aae8
--- firmware/App/Services/MsgQueues.h	(.../MsgQueues.h)	(revision 9864b14f76782f1e68bf266dcd843451748715a0)
+++ firmware/App/Services/MsgQueues.h	(.../MsgQueues.h)	(revision 9a9d04b84f4345fca87fb14d26f09d497b08aae8)
@@ -33,7 +33,7 @@
 typedef struct
 {
 #ifdef ACK_IMPLEMENTED
-    U16 seqNo;                                  // sequence # (and ACK required bit) of message
+    S16 seqNo;                                  // sequence # (and ACK required bit) of message
 #endif
     U16 msgID;                                  // ID of message
     U08 payloadLen;                             // length of payload in bytes