diff --git a/export_form.php b/export_form.php
index 351d21f..ef33010 100644
--- a/export_form.php
+++ b/export_form.php
@@ -74,7 +74,7 @@ class mod_attendance_export_form extends moodleform {
         $mform->setDefaults(array('ident[id]' => true, 'ident[uname]' => true));
         $mform->setType('id', PARAM_INT);
         $mform->setType('uname', PARAM_INT);
-        
+
         $mform->addElement('checkbox', 'includeallsessions', get_string('includeall', 'attendance'), get_string('yes'));
         $mform->setDefault('includeallsessions', true);
         $mform->addElement('checkbox', 'includenottaken', get_string('includenottaken', 'attendance'), get_string('yes'));