Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r94dab74a6432263dc4569e0cf8f9fa0b01bf1917 -rded8a2321aa2cf0505243219ff48dc31b03d5713
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 94dab74a6432263dc4569e0cf8f9fa0b01bf1917)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision ded8a2321aa2cf0505243219ff48dc31b03d5713)
@@ -889,24 +889,26 @@
 
 /*********************************************************************//**
  * @brief
- * The handleSetHDStandbyDisinfectSubmode function handles setting the
+ * The handleSetHDStandbyDisinfectSubmodeRequest function handles setting the
  * standby submode to wait for disisnfect state.
- * @details Inputs: none
+ * @details Inputs: 1=initiate, 0=cancel
  * @details Outputs: message handled
  * @param message a pointer to the message to handle
  * @return none
  *************************************************************************/
 void handleSetHDStandbyDisinfectSubmodeRequest( MESSAGE_T *message )
 {
-    BOOL result = FALSE;
+    U32 cmd;
 
-    // The payload should be 0 in this case because there is mode in this command
-    if ( 0 == message->hdr.payloadLen )
+    if ( sizeof( U32 ) == message->hdr.payloadLen )
     {
-        signalInitiateStandbyDisinfectSubmode();
+        memcpy( &cmd, &message->payload[0], sizeof( U32 ) );
+        signalInitiateStandbyDisinfectSubmode( cmd );
     }
-
-    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_UI, result );
+    else
+    {
+        handleSetHDStandbyDisinfectSubmodeResponse( FALSE, REQUEST_REJECT_REASON_INVALID_REQUEST_FORMAT );
+    }
 }
 
 /*********************************************************************//**