Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r716b61499fa47f3498232337292ede179b12703f -re4f4d7c87dc50fe7a166f26a903547315671fd17
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 716b61499fa47f3498232337292ede179b12703f)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision e4f4d7c87dc50fe7a166f26a903547315671fd17)
@@ -795,7 +795,6 @@
         DG_RESERVOIR_ID_T const activeRes = getDGActiveReservoir();
 
         setStartReservoirVolume( activeRes );
-        resetHeparinVolumeDelivered();  // get clean starting volume/position before we start treatment
         requestNewOperationMode( MODE_TREA );
     }