diff --git a/lib/WebGUI/DateTime.pm b/lib/WebGUI/DateTime.pm
index 4d403e3b3..d1fd96658 100644
--- a/lib/WebGUI/DateTime.pm
+++ b/lib/WebGUI/DateTime.pm
@@ -216,7 +216,7 @@ sub epochToHuman {
 	$output =~ s/\%d/$value/g;
 	$output =~ s/\%D/$day/g;
 	if ($output =~ /\%w/) {
-		my $dayName = getDayName(Day_of_Week($year,$month,$day));
+		my $dayName = getDayName(Date::Calc::Day_of_Week($year,$month,$day));
 		$output =~ s/\%w/$dayName/g;
 	}
   #---hour stuff