diff --git a/common/framework/parsers/dbtable/Table.php b/common/framework/parsers/dbtable/Table.php
index 27f80c322..67d1e5ca1 100644
--- a/common/framework/parsers/dbtable/Table.php
+++ b/common/framework/parsers/dbtable/Table.php
@@ -63,7 +63,7 @@ class Table
 				{
 					$columndef .= ' DEFAULT ' . $column->default_value;
 				}
-				elseif (preg_match('/^[a-z0-9_()]$/i', $column->default_value))
+				elseif (preg_match('/^\w+\(\)$/', $column->default_value))
 				{
 					$columndef .= ' DEFAULT ' . $column->default_value;
 				}