Index: sources/gui/qml/pages/treatment/TreatmentBegin.qml
===================================================================
diff -u -rf8321d4b6a5489f797122321a4821b4eeaaa50cb -rd47617a89c852ffc38d6a0c62eb18ea41ae27d29
--- sources/gui/qml/pages/treatment/TreatmentBegin.qml	(.../TreatmentBegin.qml)	(revision f8321d4b6a5489f797122321a4821b4eeaaa50cb)
+++ sources/gui/qml/pages/treatment/TreatmentBegin.qml	(.../TreatmentBegin.qml)	(revision d47617a89c852ffc38d6a0c62eb18ea41ae27d29)
@@ -87,9 +87,12 @@
                 min: vTreatmentBegin.ufVolumeMin
                 max: vTreatmentBegin.ufVolumeMax
                 step: vTreatmentBegin.ufVolumeRes
-                onSliderChanged: {
+                onPressed: {
                     vTreatmentBegin.ufVolume = value;
                 }
+                onReleased: {
+                    vTreatmentBegin.ufVolume = value;
+                }
             }
 
             TouchRect { id : _continueRect