Index: firmware/App/Controllers/LoadCell.c
===================================================================
diff -u -r47eae6b348bd1795718ccb7d085ae724dae53f4e -rcb01369be819a90490f7549eb91ce2a24d616f52
--- firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision 47eae6b348bd1795718ccb7d085ae724dae53f4e)
+++ firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision cb01369be819a90490f7549eb91ce2a24d616f52)
@@ -302,8 +302,8 @@
     {
         // For the first tare, the weight of the reservoir should be considered
         // The current weight of the load cell should not be greater than the weight of the reservoir + the extra weight
-        F32 deltaWeight = fabs( weight - LOAD_CELL_MIN_ALLOWED_WEIGHT_BEFORE_TARE_GRAMS );
-        isWeightOutOfRange = ( deltaWeight > MAX_ALLOWED_EXTRA_WEIGHT_BEFORE_TARE_GRAMS ? TRUE : FALSE );
+        F32 deltaWeight = fabs( weight - EMPTY_RESERVOIR_WEIGHT_GRAMS );
+        isWeightOutOfRange = ( deltaWeight > MAX_ALLOWED_EXTRA_WEIGHT_BEFORE_FIRST_TARE_GRAMS ? TRUE : FALSE );
     }
     else
     {
Index: firmware/App/DGCommon.h
===================================================================
diff -u -r9653f93d5d0fa02d01b7da83571e2932c5222393 -rcb01369be819a90490f7549eb91ce2a24d616f52
--- firmware/App/DGCommon.h	(.../DGCommon.h)	(revision 9653f93d5d0fa02d01b7da83571e2932c5222393)
+++ firmware/App/DGCommon.h	(.../DGCommon.h)	(revision cb01369be819a90490f7549eb91ce2a24d616f52)
@@ -58,7 +58,7 @@
     // Turn these flags on to disable dialysate mixing
     #define DISABLE_DIALYSATE_CHECK         1
     #define DISABLE_MIXING                  1
-    //define USE_SMALL_FLOW_SENSOR_K_FACTOR  1
+    #define USE_SMALL_FLOW_SENSOR_K_FACTOR  1
 
     #include <stdio.h>
     #include <strings.h>