Index: sources/gui/qml/components/HeaderBar.qml
===================================================================
diff -u -r290835d1a861d8fe7a716d061f0b079d9cfff75a -r68ee08e480a942542f58b176b84fe230940e984f
--- sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision 290835d1a861d8fe7a716d061f0b079d9cfff75a)
+++ sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision 68ee08e480a942542f58b176b84fe230940e984f)
@@ -181,6 +181,7 @@
             extraSpace      : _headerButtonRow.spacing
             visible         : vTDTreatmentStates.txEnd
 
+            onPressed       : _endTreatmentDialog.open()
         }
 
         IconButton { id  : _waterSample