X-Git-Url: http://git.freeside.biz/gitweb/?p=freeside.git;a=blobdiff_plain;f=fs_selfservice%2FFS-SelfService%2Fcgi%2Fview_usage_details.html;h=27afe12a701fe7f3716b85cbce2fe65eed3f2da3;hp=0388c2fadda3f1cf9e0ec21ebde115f4b5a95d42;hb=0592d8e1ad7c8cab286b43743765fd1435cfac84;hpb=80879cb478cf28d90b3abb8a26bca29ad3a3f3b1;ds=sidebyside

diff --git a/fs_selfservice/FS-SelfService/cgi/view_usage_details.html b/fs_selfservice/FS-SelfService/cgi/view_usage_details.html
index 0388c2fad..27afe12a7 100644
--- a/fs_selfservice/FS-SelfService/cgi/view_usage_details.html
+++ b/fs_selfservice/FS-SelfService/cgi/view_usage_details.html
@@ -47,7 +47,9 @@
     $OUT .= '</TD><TD ALIGN="right">';
     $OUT .= Date::Format::time2str('%T%P %a&nbsp;%b&nbsp;%o&nbsp;%Y', $usage->{'acctstarttime'});
     $OUT .= '</TD><TD ALIGN="right">';
-    my $duration =  $usage->{'acctstoptime'} - $usage->{'acctstarttime'};
+    my $duration = ( $usage->{'acctstoptime'} && $usage->{'acctstarttime'} )
+                     ? ( $usage->{'acctstoptime'} - $usage->{'acctstarttime'} )
+                     : 0;
     $total += $duration;
     my $h = int($duration/3600);
     my $m = sprintf("%02d", int(($duration % 3600) / 60));