Index: openacs-4/packages/calendar/www/view-print-display.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/view-print-display.tcl,v
diff -u -r1.2.2.2 -r1.2.2.3
--- openacs-4/packages/calendar/www/view-print-display.tcl	14 Jul 2022 15:45:01 -0000	1.2.2.2
+++ openacs-4/packages/calendar/www/view-print-display.tcl	22 Oct 2023 16:30:01 -0000	1.2.2.3
@@ -9,7 +9,7 @@
 
 } {
     items
-    {show_calendar_name_p:boolean true}
+    {show_calendar_name_p:boolean,notnull true}
 }
 
 # Local variables: