diff --git a/src/IDF/Migrations/19IssueDueDate.php b/src/IDF/Migrations/19IssueDueDate.php
deleted file mode 100644
index 8cf809f..0000000
--- a/src/IDF/Migrations/19IssueDueDate.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
-# ***** BEGIN LICENSE BLOCK *****
-# This file is part of InDefero, an open source project management application.
-# Copyright (C) 2008-2011 Céondo Ltd and contributors.
-#
-# InDefero is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# InDefero is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-# ***** END LICENSE BLOCK ***** */
-
-/**
- * Add the private column for the project.
- */
-
-function IDF_Migrations_19IssueDueDate_up($params=null)
-{
-    $table = Pluf::factory('IDF_Issue')->getSqlTable();
-    $sql = array();
-    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' ADD COLUMN "due_dtime" DATETIME';
-    $sql['MySQL'] = 'ALTER TABLE '.$table.' ADD COLUMN `due_dtime` DATETIME';
-    $db = Pluf::db();
-    $engine = Pluf::f('db_engine');
-    if (!isset($sql[$engine])) {
-        throw new Exception('SQLite complex migration not supported.');
-    }
-    $db->execute($sql[$engine]);
-}
-
-function IDF_Migrations_19IssueDueDate_down($params=null)
-{
-    $table = Pluf::factory('IDF_Issue')->getSqlTable();
-    $sql = array();
-    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' DROP COLUMN "due_dtime"';
-    $sql['MySQL'] = 'ALTER TABLE '.$table.' DROP COLUMN `due_dtime`';
-    $db = Pluf::db();
-    $engine = Pluf::f('db_engine');
-    if (!isset($sql[$engine])) {
-        throw new Exception('SQLite complex migration not supported.');
-    }
-    $db->execute($sql[$engine]);
-
-}
\ No newline at end of file
diff --git a/src/IDF/Migrations/25IssueDueDate.php b/src/IDF/Migrations/25IssueDueDate.php
new file mode 100644
index 0000000..6677219
--- /dev/null
+++ b/src/IDF/Migrations/25IssueDueDate.php
@@ -0,0 +1,55 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008-2011 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Add the private column for the project.
+ */
+
+function IDF_Migrations_25IssueDueDate_up($params=null)
+{
+    $table = Pluf::factory('IDF_Issue')->getSqlTable();
+    $sql = array();
+    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' ADD COLUMN "due_dtime" DATETIME';
+    $sql['MySQL'] = 'ALTER TABLE '.$table.' ADD COLUMN `due_dtime` DATETIME';
+    $db = Pluf::db();
+    $engine = Pluf::f('db_engine');
+    if (!isset($sql[$engine])) {
+        throw new Exception('SQLite complex migration not supported.');
+    }
+    $db->execute($sql[$engine]);
+}
+
+function IDF_Migrations_25IssueDueDate_down($params=null)
+{
+    $table = Pluf::factory('IDF_Issue')->getSqlTable();
+    $sql = array();
+    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' DROP COLUMN "due_dtime"';
+    $sql['MySQL'] = 'ALTER TABLE '.$table.' DROP COLUMN `due_dtime`';
+    $db = Pluf::db();
+    $engine = Pluf::f('db_engine');
+    if (!isset($sql[$engine])) {
+        throw new Exception('SQLite complex migration not supported.');
+    }
+    $db->execute($sql[$engine]);
+
+}