--- a/plugins/mod_storage_sql2.lua	Mon Nov 11 23:09:18 2013 +0100
+++ b/plugins/mod_storage_sql2.lua	Mon Nov 11 23:15:26 2013 +0100
@@ -44,7 +44,7 @@
 
 	local ProsodyArchiveTable = Table {
 		name="prosodyarchive";
-		Column { name="sort_id", type="INTEGER", primary_key=true, auto_increment=true, nullable=false };
+		Column { name="sort_id", type="INTEGER", primary_key=true, auto_increment=true };
 		Column { name="host", type="TEXT", nullable=false };
 		Column { name="user", type="TEXT", nullable=false };
 		Column { name="store", type="TEXT", nullable=false };