Index: firmware/App/Services/TDInterface.c
===================================================================
diff -u -r84b30e2da7c4374d06ef068d3cb2b5c0c4fabccd -rf90c1eef73251d75ce49645eb05deb492a486ff0
--- firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision 84b30e2da7c4374d06ef068d3cb2b5c0c4fabccd)
+++ firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision f90c1eef73251d75ce49645eb05deb492a486ff0)
@@ -543,7 +543,7 @@
             setTDAcidAndBicarbType( startTxRequest.acidConvFactor, startTxRequest.bicarbConvFactor,
                                     startTxRequest.sodium, startTxRequest.bicarbonate );
             setTDDialyzerBypass( startTxRequest.bypassDialyzer );
-            setSubstitutionPumpTargetSpeed(startTxRequest.hdfRate);
+            setSubstitutionPumpTargetSpeed(D92_PUMP, startTxRequest.hdfRate);
 
             // start dialysate generation
             result = requestDDGenDialStart();