Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -r24d04aef5315ed3d8fc5136d1da8504794ee3dc2 -re9b8042fd703397914a792b993ee75e6db36ff8d
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 24d04aef5315ed3d8fc5136d1da8504794ee3dc2)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision e9b8042fd703397914a792b993ee75e6db36ff8d)
@@ -1308,16 +1308,11 @@
             *rejReason = REQUEST_REJECT_REASON_DG_FILTER_FLUSH_HAS_BEEN_EXPIRED;
         }
 
-        if ( ( FALSE == isHeatDisValid ) && ( FALSE == isChemFlushComplete ) )
+        if ( ( FALSE == isHeatDisValid ) || ( FALSE == isChemFlushComplete ) || ( FALSE == hasDisBeenDone ) )
         {
             *rejReason = REQUEST_REJECT_REASON_DG_DISINFECT_HAS_BEEN_EXPIRED;
         }
 
-        if ( FALSE == hasDisBeenDone )
-        {
-            *rejReason = REQUEST_REJECT_REASON_DG_DISINFECT_HAS_BEEN_EXPIRED;
-        }
-
         // If all of the above conditions are true, it means we can start a treatment
         if ( ( TRUE == hasDisBeenDone ) && ( TRUE == isHeatDisValid ) && ( TRUE == isChemFlushComplete ) && ( TRUE == isFlushValid ) )
         {