diff --git a/timesheet/inc/class.timesheet_import_csv.inc.php b/timesheet/inc/class.timesheet_import_csv.inc.php
index 423465c97a..63c674d5d1 100644
--- a/timesheet/inc/class.timesheet_import_csv.inc.php
+++ b/timesheet/inc/class.timesheet_import_csv.inc.php
@@ -174,7 +174,7 @@ class timesheet_import_csv implements importexport_iface_import_plugin  {
 			// don't import empty records
 			if( count( array_unique( $record ) ) < 2 ) continue;
 
-			$result = importexport_import_csv::convert($record, timesheet_egw_record::$types, 'timesheet', $lookups);
+			$result = importexport_import_csv::convert($record, timesheet_egw_record::$types, 'timesheet', $lookups, $_definition->plugin_options['convert']);
 			if($result) $this->warnings[$import_csv->get_current_position()] = $result;
 
 			// Automatically handle text categories without explicit translation