diff --git a/create.php b/create.php
index b047125..eb09d2a 100644
--- a/create.php
+++ b/create.php
@@ -29,7 +29,6 @@ if (empty($_POST)) {
 </div>
 <?php
 } else {
-
 	$length = 6;
 	$token = bin2hex(random_bytes($length));
 	if (isset($_POST['fsize']) && is_numeric($_POST['fsize'])) {
@@ -42,7 +41,7 @@ if (empty($_POST)) {
 	} else {
 		$text = '';
 	}
-	if (isset($_POST['fduration']) && in_array($_POST['fduration'], DataBase::OPTIONS_DURATION)) {
+	if (isset($_POST['fduration']) && key_exists($_POST['fduration'], DataBase::OPTIONS_DURATION)) {
 		$duration = $_POST['fduration'];
 	} else {
 		$duration = DataBase::DEFAULT_DURATION;
diff --git a/db.php b/db.php
index 1644016..52ea468 100644
--- a/db.php
+++ b/db.php
@@ -198,10 +198,10 @@ class DataBase
 		}
 		if (!isset($duration)) {
 			$duration = self::DEFAULT_DURATION;
-		} elseif (!in_array($duration, self::OPTIONS_DURATION)) {
+		} elseif (!key_exists($duration, self::OPTIONS_DURATION)) {
 			$duration = self::DEFAULT_DURATION;
 		}
-		$duration = date('Y-m-d H:i:s', strtotime($duration));
+		$duration = date('Y-m-d H:i:s', strtotime(self::OPTIONS_DURATION[$duration]));
 		$stmt = $this->db->prepare("
 			INSERT INTO clouds(code, text, size, delete_t)
 			VALUES      (:code, :text, :size, :duration);