diff --git a/zayavka.php b/zayavka.php
index cf19bcf..b0fcb15 100644
--- a/zayavka.php
+++ b/zayavka.php
@@ -646,7 +646,7 @@ VALUES ("?s","?s",?i,?i,?i,"?s","?s",?i,?i,?i,?i)',
 
 $zay = new zayavka;
 header("Cache-Control: no-cache");
-if ($_POST['open']) {
+if (!empty($_POST['open'])) {
     $f = fopen("/tmp/zayavka/" . $user['id'] . ".txt", "w+");
     fputs($f, time());
     fclose($f);