Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -rf7e3018ec6ab762fe08efb42b21fb2ca970174b0 -r9864b14f76782f1e68bf266dcd843451748715a0
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision f7e3018ec6ab762fe08efb42b21fb2ca970174b0)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 9864b14f76782f1e68bf266dcd843451748715a0)
@@ -65,6 +65,9 @@
 
 // ********** public function prototypes **********
 
+// ACK MSG
+BOOL sendACKMsg( MESSAGE_T *message );
+
 // MSG_ID_OFF_BUTTON_PRESS
 BOOL sendOffButtonMsgToUI( U08 cmd );
 void handleOffButtonConfirmMsgFromUI( MESSAGE_T *message );
@@ -162,5 +165,5 @@
 // MSG_ID_DIAL_PUMP_MEAS_ROTOR_SPEED_OVERRIDE
 void handleTestDialPumpRotorMeasuredSpeedOverrideRequest( MESSAGE_T *message );
 
-
 #endif
+