Index: firmware/App/Modes/ModeFill.c
===================================================================
diff -u -rc774db57bc06b2dac2bf9aa268b8eab2294046d9 -r569fc4bd2ae5f45677aaf34816d7e01834c68708
--- firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision c774db57bc06b2dac2bf9aa268b8eab2294046d9)
+++ firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision 569fc4bd2ae5f45677aaf34816d7e01834c68708)
@@ -267,8 +267,10 @@
     setConcentratePumpTargetSpeed( CONCENTRATEPUMPS_CP1, acidCP1PumpFlowRate );
     setConcentratePumpTargetSpeed( CONCENTRATEPUMPS_CP2, bicarbCP2PumpFlowRate );
 
+#ifndef DISABLE_DIALYSATE_CHECK
     BOOL const isROPumpFlowRateOutOfRange = ( measuredROFlowRate <= FILL_MIN_RO_FLOW_RATE ) || ( measuredROFlowRate >= FILL_MAX_RO_FLOW_RATE );
     checkPersistentAlarm( PERSISTENT_ALARM_RO_PUMP_FLOW_RATE_OUT_OF_RANGE, isROPumpFlowRateOutOfRange, measuredROFlowRate, FILL_MIN_RO_FLOW_RATE );
+#endif
 }
 
 /**@}*/