Index: openacs-4/packages/evaluation/tcl/evaluation-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/evaluation/tcl/evaluation-procs.tcl,v
diff -u -r1.41.2.1 -r1.41.2.2
--- openacs-4/packages/evaluation/tcl/evaluation-procs.tcl	12 Sep 2015 11:06:02 -0000	1.41.2.1
+++ openacs-4/packages/evaluation/tcl/evaluation-procs.tcl	28 Oct 2016 20:31:56 -0000	1.41.2.2
@@ -327,7 +327,7 @@
     set interval_def [template::util::date::defaultInterval day]
     for { set i [lindex $interval_def 0] }  { $i <= 15 }  { incr i 1 } {
 	incr day
-	if { [expr {$day + $i}] >= [lindex $interval_def 1] } {
+	if { $day + $i >= [lindex $interval_def 1] } {
 	    incr month 1
 	    set day 1
 	}