Index: sources/gui/qml/pages/pretreatment/PreTreatmentDisposablesStack.qml
===================================================================
diff -u -r8172c6aa4187be26aa9c0e73a130bc6183ad10dd -r1d3e80dd50bfe08502c8e52de126a2b809370211
--- sources/gui/qml/pages/pretreatment/PreTreatmentDisposablesStack.qml	(.../PreTreatmentDisposablesStack.qml)	(revision 8172c6aa4187be26aa9c0e73a130bc6183ad10dd)
+++ sources/gui/qml/pages/pretreatment/PreTreatmentDisposablesStack.qml	(.../PreTreatmentDisposablesStack.qml)	(revision 1d3e80dd50bfe08502c8e52de126a2b809370211)
@@ -32,7 +32,7 @@
 
     property int stackStepIndex : 3
 
-    readonly property bool hasHeparin : vTreatmentCreate.heparinBolusVolume || vTreatmentCreate.heparinDispensingRate
+    readonly property bool hasHeparin : ! ( vTreatmentCreate.heparinBolusVolumeOff && vTreatmentCreate.heparinDispensingRateOff )
 
     PreTreatmentBase { id: _preTreatmentDisposablesSelfTest
         objectName       :"_preTreatmentDisposablesSelfTest"