@@ -1916,8 +1916,8 @@ def __init__(self, ident, database, description = ()):
 proctup['_proid'],
 # ($1::type, $2::type, ... $n::type)
 ', '.join([
-'$%d::%s' %(x + 1, database.typio.sql_type_from_oid(proargs[x]))
-for x in range(len(proargs))
+'$%d::%s' %(x, database.typio.sql_type_from_oid(proargs[x]))
+for x in range(1, len(proargs)+1)
 ]),
 # Description for anonymous record returns
 (description and \