diff --git a/phpBB/includes/db/migration/data/310/dev.php b/phpBB/includes/db/migration/data/310/dev.php
index 13b36bbf30..34f081bf62 100644
--- a/phpBB/includes/db/migration/data/310/dev.php
+++ b/phpBB/includes/db/migration/data/310/dev.php
@@ -21,6 +21,7 @@ class phpbb_db_migration_data_310_dev extends phpbb_db_migration
 			'phpbb_db_migration_data_310_style_update_p2',
 			'phpbb_db_migration_data_310_timezone_p2',
 			'phpbb_db_migration_data_310_reported_posts_display',
+			'phpbb_db_migration_data_310_remove_msnm',
 		);
 	}
 
diff --git a/phpBB/includes/db/migration/data/310/remove_msnm.php b/phpBB/includes/db/migration/data/310/remove_msnm.php
new file mode 100644
index 0000000000..521161df6b
--- /dev/null
+++ b/phpBB/includes/db/migration/data/310/remove_msnm.php
@@ -0,0 +1,43 @@
+<?php
+/**
+*
+* @package migration
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License v2
+*
+*/
+
+class phpbb_db_migration_data_310_remove_msnm extends phpbb_db_migration
+{
+	public function effectively_installed()
+	{
+		return !$this->db_tools->sql_column_exists($this->table_prefix . 'users', 'user_msnm');
+	}
+
+	static public function depends_on()
+	{
+		return array('phpbb_db_migration_data_30x_3_0_11');
+	}
+
+	public function update_schema()
+	{
+		return array(
+			'drop_columns'	=> array(
+				$this->table_prefix . 'users'			=> array(
+					'user_msnm',
+				),
+			),
+		);
+	}
+
+	public function revert_schema()
+	{
+		return array(
+			'add_columns'	=> array(
+				$this->table_prefix . 'users'			=> array(
+					'user_msnm'		=> array('VCHAR_UNI', ''),
+				),
+			),
+		);
+	}
+}