Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r037f0edb0b880130563058c809ba50308f2a63e9 -r89259a1e69799a051874afaf351c37091bef26da
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 037f0edb0b880130563058c809ba50308f2a63e9)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 89259a1e69799a051874afaf351c37091bef26da)
@@ -487,11 +487,17 @@
  *************************************************************************/
 void tareLoadCellsAtEmpty( DG_RESERVOIR_ID_T reservoirId )
 {
+    U32 const targetDrainVolume = getReservoirDrainVolumeTargetMl();
+
     if ( TRUE == tareLoadCellRequest )
     {
         tareLoadCellRequest = FALSE;
-        tareLoadCell( associatedLoadCell[ reservoirId ] );
-        tareLoadCell( redundantLoadCell[ reservoirId ] );
+
+        if ( MIN_RESERVOIR_VOLUME_ML == targetDrainVolume )
+        {
+            tareLoadCell( associatedLoadCell[ reservoirId ] );
+            tareLoadCell( redundantLoadCell[ reservoirId ] );
+        }
     }
 }