diff --git a/dibi/Nette/DateTime53.php b/dibi/Nette/DateTime53.php
new file mode 100644
index 00000000..65b6a4c3
--- /dev/null
+++ b/dibi/Nette/DateTime53.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Nette Framework
+ *
+ * @copyright  Copyright (c) 2004, 2010 David Grudl
+ * @license    http://nettephp.com/license  Nette license
+ * @link       http://nettephp.com
+ * @category   Nette
+ * @package    Nette
+ */
+
+// no namespace
+
+
+
+/**
+ * DateTime with serialization and timestamp support for PHP 5.2.
+ *
+ * @copyright  Copyright (c) 2004, 2010 David Grudl
+ * @package    Nette
+ */
+class DateTime53 extends DateTime
+{
+    
+	public function __sleep()
+	{
+		$this->fix = array($this->format('Y-m-d H:i:s'), $this->getTimezone()->getName());
+		return array('fix');
+	}
+
+
+
+	public function __wakeup()
+	{
+		$this->__construct($this->fix[0], new DateTimeZone($this->fix[1]));
+		unset($this->fix);
+	}
+
+
+
+	public function getTimestamp()
+	{
+		return (int) $this->format('U');
+	}
+
+
+
+	public function setTimestamp($timestamp)
+	{
+		return $this->__construct(date('Y-m-d H:i:s', $timestamp), new DateTimeZone($this->getTimezone()->getName())); // getTimeZone() crashes in PHP 5.2.6
+	}
+    
+}
diff --git a/dibi/dibi.php b/dibi/dibi.php
index 14c57ece..8fe08d74 100644
--- a/dibi/dibi.php
+++ b/dibi/dibi.php
@@ -60,12 +60,16 @@ if (!interface_exists(/*Nette\*/'IDebuggable', FALSE)) {
 	require_once dirname(__FILE__) . '/Nette/IDebuggable.php';
 }
 
+if (!class_exists('DateTime53', FALSE)) {
+	require_once dirname(__FILE__) . '/Nette/DateTime53.php';
+}
+
 
 
 /**
  * Back-compatibility
  */
-class DibiVariable extends DateTime
+class DibiVariable extends DateTime53
 {
 	function __construct($val)
 	{
@@ -587,7 +591,7 @@ class dibi
 	 */
 	public static function datetime($time = NULL)
 	{
-		return new DateTime(is_numeric($time) ? date('Y-m-d H:i:s', $time) : $time);
+		return new DateTime53(is_numeric($time) ? date('Y-m-d H:i:s', $time) : $time);
 	}
 
 
@@ -597,7 +601,7 @@ class dibi
 	 */
 	public static function date($date = NULL)
 	{
-		return new DateTime(is_numeric($date) ? date('Y-m-d', $date) : $date);
+		return new DateTime53(is_numeric($date) ? date('Y-m-d', $date) : $date);
 	}
 
 
diff --git a/dibi/libs/DibiResult.php b/dibi/libs/DibiResult.php
index 683510aa..30607d57 100644
--- a/dibi/libs/DibiResult.php
+++ b/dibi/libs/DibiResult.php
@@ -623,13 +623,13 @@ class DibiResult extends DibiObject implements IDataSource
 				return is_numeric($value) ? (int) $value : strtotime($value);
 
 			} elseif ($format === TRUE) { // return DateTime object
-				return new DateTime(is_numeric($value) ? date('Y-m-d H:i:s', $value) : $value);
+				return new DateTime53(is_numeric($value) ? date('Y-m-d H:i:s', $value) : $value);
 
 			} elseif (is_numeric($value)) { // single timestamp
 				return date($format, $value);
 
 			} else {
-				$value = new DateTime($value);
+				$value = new DateTime53($value);
 				return $value->format($format);
 			}
 
diff --git a/dibi/libs/DibiRow.php b/dibi/libs/DibiRow.php
index dd0b5244..854c624b 100644
--- a/dibi/libs/DibiRow.php
+++ b/dibi/libs/DibiRow.php
@@ -47,13 +47,13 @@ class DibiRow extends ArrayObject
 			return is_numeric($time) ? (int) $time : strtotime($time);
 
 		} elseif ($format === TRUE) { // return DateTime object
-			return new DateTime(is_numeric($time) ? date('Y-m-d H:i:s', $time) : $time);
+			return new DateTime53(is_numeric($time) ? date('Y-m-d H:i:s', $time) : $time);
 
 		} elseif (is_numeric($time)) { // single timestamp
 			return date($format, $time);
 
 		} else {
-			$time = new DateTime($time);
+			$time = new DateTime53($time);
 			return $time->format($format);
 		}
 	}