Index: sources/gui/qml/pages/treatment/sections/TreatmentHDFComponent.qml
===================================================================
diff -u -rde738ed372de968283937468795bdf6318c52e5a -rabe8e7cfe31d4ac42a9d85f8e5d93fa809025ea9
--- sources/gui/qml/pages/treatment/sections/TreatmentHDFComponent.qml	(.../TreatmentHDFComponent.qml)	(revision de738ed372de968283937468795bdf6318c52e5a)
+++ sources/gui/qml/pages/treatment/sections/TreatmentHDFComponent.qml	(.../TreatmentHDFComponent.qml)	(revision abe8e7cfe31d4ac42a9d85f8e5d93fa809025ea9)
@@ -127,7 +127,7 @@
                 minimum         : 0
                 maximum         : _root.prescribedSubstitutionVal.toFixed(Variables.substitutionPrecision)
                 value           : _root.substitutionValue.toFixed(Variables.substitutionPrecision)
-                valueEx         : _root.estimatedSubstitutionVal.toFixed(Variables.substitutionPrecision)
+                valueEx         : _root.volumeDeviation ? _root.estimatedSubstitutionVal.toFixed(Variables.substitutionPrecision) : 0
 
                 unitText        : Variables.unitVolume
                 color           : vTreatmentHDF.hdfState === TreatmentHDF.Paused ? Colors.pauseColor : Colors.progressBarUltrafiltration