Index: firmware/App/Services/MsgQueues.h
===================================================================
diff -u -rf068446fdb7889d320ddb6ffbd58f347ce0501e7 -r4d1572f8226f06febef4a536cdd0946d0dd0fb02
--- firmware/App/Services/MsgQueues.h	(.../MsgQueues.h)	(revision f068446fdb7889d320ddb6ffbd58f347ce0501e7)
+++ firmware/App/Services/MsgQueues.h	(.../MsgQueues.h)	(revision 4d1572f8226f06febef4a536cdd0946d0dd0fb02)
@@ -32,9 +32,7 @@
 #pragma pack(push,1)
 typedef struct
 {
-#ifndef ACK_NOT_IMPLEMENTED
     S16 seqNo;                                  // sequence # (and ACK required bit) of message
-#endif
     U16 msgID;                                  // ID of message
     U08 payloadLen;                             // length of payload in bytes
 } MESSAGE_HEADER_T;