diff --git a/phpgwapi/inc/class.db_mssql.inc.php b/phpgwapi/inc/class.db_mssql.inc.php
index 5b60f7c597..4c7aa020ad 100644
--- a/phpgwapi/inc/class.db_mssql.inc.php
+++ b/phpgwapi/inc/class.db_mssql.inc.php
@@ -102,12 +102,12 @@
 		// I don't have access to M$-SQL, can someone finish these 2 functions ?  (jengo)
 		function to_timestamp($epoch)
 		{
-			return False;
+			return date('Y-m-d H:i:s', $epoch);
 		}
 
 		function from_timestamp($timestamp)
 		{
-			return False;
+			return strtotime($timestamp);
 		}
 
 		// public: perform a query with limited result set