diff --git a/app/xml_cdr/xml_cdr_export.php b/app/xml_cdr/xml_cdr_export.php
index b39ce53d03..96a12d26f7 100644
--- a/app/xml_cdr/xml_cdr_export.php
+++ b/app/xml_cdr/xml_cdr_export.php
@@ -192,7 +192,7 @@
 				$data_body[$p] .= '<td>'.format_phone($fields['destination_number']).'</td>';
 				$data_body[$p] .= '<td>'.$fields['start_stamp'].'</td>';
 				$total['tta'] += ($fields['tta'] > 0) ? $fields['tta'] : 0;
-				$data_body[$p] .= '<td align="right">'.(($fields['tta'] > 0) ? $fields['tta'].'s' : null).'</td>';
+				$data_body[$p] .= '<td align="right">'.(($fields['tta'] >= 0) ? $fields['tta'].'s' : null).'</td>';
 				$seconds = ($fields['hangup_cause'] == "ORIGINATOR_CANCEL") ? $fields['duration'] : round(($fields['billmsec'] / 1000), 0, PHP_ROUND_HALF_UP);
 				$total['duration'] += $seconds;
 				$data_body[$p] .= '<td align="right">'.gmdate("G:i:s", $seconds).'</td>';