Index: sources/gui/qml/pages/pretreatment/PreTreatmentStack.qml
===================================================================
diff -u -rbed87eff8cfc2398d00eb62651c165f014880a1a -re6f122cd598d085faa3b1e295317d793a1dd9fcb
--- sources/gui/qml/pages/pretreatment/PreTreatmentStack.qml	(.../PreTreatmentStack.qml)	(revision bed87eff8cfc2398d00eb62651c165f014880a1a)
+++ sources/gui/qml/pages/pretreatment/PreTreatmentStack.qml	(.../PreTreatmentStack.qml)	(revision e6f122cd598d085faa3b1e295317d793a1dd9fcb)
@@ -134,7 +134,7 @@
             break
         case PreTreatmentStack.Step.CreateRx:
             _pretreatmentCreate.confirmButtonClicked()
-            page ( _pretreatmentDialysateUf )
+            if ( vTreatmentCreate.parametersValidated ) { page ( _pretreatmentDialysateUf ) }
             break
         case PreTreatmentStack.Step.DialysateUF:
             page ( _pretreatmentConnect )