Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -rf5f37b1e2865bc495f11bc2d6532c15059ae2f37 -rd4607005c470de42f92c8c6a5c13a4ce321ecbac
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision f5f37b1e2865bc495f11bc2d6532c15059ae2f37)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision d4607005c470de42f92c8c6a5c13a4ce321ecbac)
@@ -34,7 +34,6 @@
 
 #define DEFAULT_TARGET_FILL_FLOW_RATE_LPM                  0.8F              ///< Default target fill flow rate in L/min.
 #define DRAIN_RESERVOIR_TO_VOLUME_ML                       0                 ///< Drain reservoir to this volume (in mL) during treatment.
-#define LOAD_CELL_PRIMARY_BACKUP_MAX_ALLOWED_DRIFT_GRAMS  10.0F              ///< Reservoir load cell drift difference allowed
 #define LOAD_CELL_ILLEGAL_WEIGHT_VALUE                   -10000.0F           ///< Initial value for Load Cells, known bad value
 
 /// DG Concentrate ratios data structure.