Index: sources/gui/qml/components/HeaderBar.qml
===================================================================
diff -u -r9ea6aa3bf4e8c4b5ef8970a6c19ad12b5765c58d -rbe918124565d9f0add371e25782804f19e0cba17
--- sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision 9ea6aa3bf4e8c4b5ef8970a6c19ad12b5765c58d)
+++ sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision be918124565d9f0add371e25782804f19e0cba17)
@@ -114,8 +114,7 @@
             iconSize        : Variables.headerIconDiameter
             iconImageSource : "qrc:/images/iPrescription"
             extraSpace      : _headerButtonRow.spacing
-            visible         : vTDOpMode.validateParameters  ||
-                              vTDOpMode.preTreatment        ||
+            visible         : vTDOpMode.preTreatment        ||
                               vTDOpMode.inTreatment         ||
                               vTDOpMode.postTreatment