diff --git a/app/xml_cdr/xml_cdr.php b/app/xml_cdr/xml_cdr.php
index 8288e5b3d0..fb139285fd 100644
--- a/app/xml_cdr/xml_cdr.php
+++ b/app/xml_cdr/xml_cdr.php
@@ -796,7 +796,7 @@
 					}
 				//tta (time to answer)
 					if (permission_exists('xml_cdr_tta')) {
-						$content .= "	<td class='middle right hide-md-dn'>".(($row['tta'] > 0) ? $row['tta']."s" : "&nbsp;")."</td>\n";
+						$content .= "	<td class='middle right hide-md-dn'>".(($row['tta'] >= 0) ? $row['tta']."s" : "&nbsp;")."</td>\n";
 					}
 				//duration
 					if (permission_exists('xml_cdr_duration')) {