diff --git a/lib/Doctrine/Formatter.php b/lib/Doctrine/Formatter.php
index 3293b106c..7691cce17 100644
--- a/lib/Doctrine/Formatter.php
+++ b/lib/Doctrine/Formatter.php
@@ -158,6 +158,9 @@ class Doctrine_Formatter extends Doctrine_Connection_Module
         case 'array':
         case 'object':
             $input = serialize($input);
+        case 'date':
+        case 'time':
+        case 'timestamp':
         case 'string':
         case 'char':
         case 'varchar':
diff --git a/tests/Ticket/642TestCase.php b/tests/Ticket/642TestCase.php
new file mode 100644
index 000000000..a5d7dffe7
--- /dev/null
+++ b/tests/Ticket/642TestCase.php
@@ -0,0 +1,65 @@
+<?php
+/*
+ *  $Id$
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information, see
+ * <http://www.phpdoctrine.com>.
+ */
+
+/**
+ * Doctrine_Ticket_642_TestCase
+ *
+ * @package     Doctrine
+ * @author      Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @category    Object Relational Mapping
+ * @link        www.phpdoctrine.com
+ * @since       1.0
+ * @version     $Revision$
+ */
+class Doctrine_Ticket_642_TestCase extends Doctrine_UnitTestCase 
+{
+    public function testInit()
+    {
+        $this->dbh = new Doctrine_Adapter_Mock('mysql');
+        $this->conn = Doctrine_Manager::getInstance()->openConnection($this->dbh);
+    }
+
+
+    public function testTest()
+    {
+        $this->conn->export->exportClasses(array('stDummyObj'));
+        $queries = $this->dbh->getAll();
+
+        // Default was not being defined, even if notnull was set
+        $this->assertEqual("CREATE TABLE st_dummy_obj (id BIGINT AUTO_INCREMENT, startdate DATETIME DEFAULT '0000-00-00 00:00:00' NOT NULL, PRIMARY KEY(id)) ENGINE = INNODB", $queries[1]);
+	}
+}
+
+
+class stDummyObj extends Doctrine_Record
+{
+    public function setTableDefinition()
+    {
+        $this->setTableName('st_dummy_obj');
+        $this->hasColumn('startDate', 'timestamp', null, array(
+            'notnull' => true, 
+            'default' => '0000-00-00 00:00:00'
+        ));
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/tests/run.php b/tests/run.php
index 2f598ac12..22e3d6a30 100644
--- a/tests/run.php
+++ b/tests/run.php
@@ -18,6 +18,7 @@ $tickets->addTestCase(new Doctrine_Ticket_587_TestCase());
 $tickets->addTestCase(new Doctrine_Ticket_576_TestCase());
 $tickets->addTestCase(new Doctrine_Ticket_583_TestCase());
 $tickets->addTestCase(new Doctrine_Ticket_626B_TestCase());
+$tickets->addTestCase(new Doctrine_Ticket_642_TestCase());
 //If you write a ticket testcase add it here like shown above!
 $test->addTestCase($tickets);