Index: firmware/App/Modes/ModeFill.c
===================================================================
diff -u -r44f739bf3e9dfe0bfb5910a6a32fc4c5b1533af3 -r696e732c9742535a58b9c65f243df7cd797d1423
--- firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision 44f739bf3e9dfe0bfb5910a6a32fc4c5b1533af3)
+++ firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision 696e732c9742535a58b9c65f243df7cd797d1423)
@@ -76,7 +76,7 @@
 #define PRIME_CONCENTRATE_LINES_TIME_OUT_MS             ( 95 * MS_PER_SECOND )                               ///< Time required to prime the concentrate lines.
 #define FLUSH_BUBBLES_PUMP_TIME_OUT_MS                  ( 2  * MS_PER_SECOND )                               ///< RO pump on during flush bubble interval in ms.
 #define DIALYSATE_TEMPERATURE_TOLERANCE_C               2.0F                                                 ///< Dialysate temperature tolerance in degree C.
-#define DIALYSATE_TEMPERATURE_SENSORS_MAX_DRIFT_C       1.0F                                                 ///< Dialysate temperature sensors maximum allowed drift in C.
+#define DIALYSATE_TEMPERATURE_SENSORS_MAX_DEVIATION_C   1.0F                                                 ///< Dialysate temperature sensors maximum allowed deviation in C.
 #define DIALYSATE_TEMP_SNSRS_OUT_OF_RANGE_TIMEOUT_MS    ( 10 * MS_PER_SECOND )                               ///< Dialysate temperature sensors drift timeout in milliseconds.
 #define DATA_PUBLISH_COUNTER_START_COUNT                63                                                   ///< Data publish counter start count.
 
@@ -900,14 +900,14 @@
 {
     F32 TDi         = getTemperatureValue( TEMPSENSORS_INLET_DIALYSATE );
     F32 TRo         = getTemperatureValue( TEMPSENSORS_OUTLET_REDUNDANT );
-    BOOL isDriftOut = ( fabs( TDi - TRo ) >= DIALYSATE_TEMPERATURE_SENSORS_MAX_DRIFT_C ? TRUE : FALSE );
+    BOOL isDriftOut = ( fabs( TDi - TRo ) >= DIALYSATE_TEMPERATURE_SENSORS_MAX_DEVIATION_C ? TRUE : FALSE );
 
 #ifndef _RELEASE_
     if ( getSoftwareConfigStatus( SW_CONFIG_DISABLE_TEMPERATURE_SENSORS_ALARM ) != SW_CONFIG_ENABLE_VALUE )
 #endif
     {
         checkPersistentAlarm( ALARM_ID_DG_DIALYSATE_TEMPERATURE_SENSORS_OUT_OF_RANGE, isDriftOut, fabs( TDi - TRo ),
-                              DIALYSATE_TEMPERATURE_SENSORS_MAX_DRIFT_C );
+                              DIALYSATE_TEMPERATURE_SENSORS_MAX_DEVIATION_C );
     }
 }