Index: firmware/App/Services/TDInterface.c
===================================================================
diff -u -r8f861eb50b8c751db8c9c76a9ae63bb4ab3d1cdc -r84b30e2da7c4374d06ef068d3cb2b5c0c4fabccd
--- firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision 8f861eb50b8c751db8c9c76a9ae63bb4ab3d1cdc)
+++ firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision 84b30e2da7c4374d06ef068d3cb2b5c0c4fabccd)
@@ -27,6 +27,7 @@
 #include "OperationModes.h"
 #include "PersistentAlarm.h"
 #include "SystemCommDD.h"
+#include "SubstitutionPump.h"
 #include "TaskGeneral.h"
 #include "TDInterface.h"
 #include "Timers.h"
@@ -542,6 +543,7 @@
             setTDAcidAndBicarbType( startTxRequest.acidConvFactor, startTxRequest.bicarbConvFactor,
                                     startTxRequest.sodium, startTxRequest.bicarbonate );
             setTDDialyzerBypass( startTxRequest.bypassDialyzer );
+            setSubstitutionPumpTargetSpeed(startTxRequest.hdfRate);
 
             // start dialysate generation
             result = requestDDGenDialStart();