diff --git a/web/skins/classic/includes/timeline_functions.php b/web/skins/classic/includes/timeline_functions.php
index 6a98a28f7..a1c84f4f3 100644
--- a/web/skins/classic/includes/timeline_functions.php
+++ b/web/skins/classic/includes/timeline_functions.php
@@ -104,6 +104,10 @@ function parseFilterToTree( $filter ) {
                         $sqlValue = "E.StartTime";
                         $dtAttr = true;
                         break;
+                    case 'StartDateTime':
+                        $sqlValue = "E.StartTime";
+                        $dtAttr = true;
+                        break;
                     case 'Date':
                         $sqlValue = "to_days( E.StartTime )";
                         $dtAttr = true;
@@ -196,6 +200,9 @@ function parseFilterToTree( $filter ) {
                         case 'DateTime':
                             $value = "'".strftime( STRF_FMT_DATETIME_DB, strtotime( $value ) )."'";
                             break;
+                        case 'StartDateTime':
+                            $value = "'".strftime( STRF_FMT_DATETIME_DB, strtotime( $value ) )."'";
+                            break;
                         case 'Date':
                             $value = "to_days( '".strftime( STRF_FMT_DATETIME_DB, strtotime( $value ) )."' )";
                             break;