Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -ra57994f752662abc0aaa8c2cf5c3af47ec2c5a20 -r5d9c5362b537331248dc592e05b6b016267eb6d3
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision a57994f752662abc0aaa8c2cf5c3af47ec2c5a20)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 5d9c5362b537331248dc592e05b6b016267eb6d3)
@@ -613,7 +613,7 @@
     patientConnectionConfirm = FALSE;
     treatmentStartRequested = FALSE;
 
-    doorClosedRequired( FALSE, FALSE );
+    doorClosedRequired( TRUE, TRUE );
 
     for ( valve = VDI; valve < NUM_OF_VALVES; ++valve )
     {