Index: sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateStack.qml
===================================================================
diff -u -rf7e23265f6ac05c41c8411fac485f3a38640927a -r108450c58851ff7c48c4607494b8cdae59952908
--- sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateStack.qml	(.../PreTreatmentCreateStack.qml)	(revision f7e23265f6ac05c41c8411fac485f3a38640927a)
+++ sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateStack.qml	(.../PreTreatmentCreateStack.qml)	(revision 108450c58851ff7c48c4607494b8cdae59952908)
@@ -57,7 +57,7 @@
         title.text              : qsTr("Patient ID")
         header.backVisible      : true
         header.confirmVisible   : true
-        header.confirmEnabled   : _pretreatmentPatientIDEntry.text
+        header.confirmEnabled   : _pretreatmentPatientIDEntry.text.trim()
         TextEntry               { id  :     _pretreatmentPatientIDEntry
             property int topMarginContent   : 200