Index: firmware/App/Modes/ModeFill.c
===================================================================
diff -u -r0cd4bdbd11c1da24df31287cb3f4e3216516ab3f -re4a33b5da88f685fee19f35b9aed2fe1085d56e0
--- firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision 0cd4bdbd11c1da24df31287cb3f4e3216516ab3f)
+++ firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision e4a33b5da88f685fee19f35b9aed2fe1085d56e0)
@@ -409,8 +409,8 @@
     F32 const measuredROFlowRate_mL_min = getMeasuredROFlowRate() * ML_PER_LITER;
     F32 const acidConductivity = getConductivityValue( CONDUCTIVITYSENSORS_CD1_SENSOR );
     F32 const dialysateConductivity = getConductivityValue( CONDUCTIVITYSENSORS_CD2_SENSOR );
-    BOOL const isAcidConductivityOutOfRange = ( acidConductivity <= MIN_ACID_CONCENTRATE_CONDUCTIVITY ) || ( MAX_ACID_CONCENTRATE_CONDUCTIVITY >= acidConductivity );
-    BOOL const isDialysateConductivityOutOfRange = ( dialysateConductivity <= MIN_DIALYSATE_CONDUCTIVITY ) || ( MAX_DIALYSATE_CONDUCTIVITY >= dialysateConductivity );
+    BOOL const isAcidConductivityOutOfRange = ( acidConductivity <= MIN_ACID_CONCENTRATE_CONDUCTIVITY ) || ( acidConductivity >= MAX_ACID_CONCENTRATE_CONDUCTIVITY );
+    BOOL const isDialysateConductivityOutOfRange = ( dialysateConductivity <= MIN_DIALYSATE_CONDUCTIVITY ) || ( dialysateConductivity >= MAX_DIALYSATE_CONDUCTIVITY );
 
     DG_FILL_MODE_STATE_T result = DG_FILL_MODE_STATE_DELIVER_DIALYSATE;
     DG_RESERVOIR_ID_T inactiveReservoir = getInactiveReservoir();