diff --git a/ippisite/ippidb/ws.py b/ippisite/ippidb/ws.py
index 13f6c2acad35a8f1ca50c060afecbc576dcd13a4..7a7cd26cdd1cffde22955ef326bc30a9cc53928e 100644
--- a/ippisite/ippidb/ws.py
+++ b/ippisite/ippidb/ws.py
@@ -4,7 +4,6 @@ iPPI-DB web-service client utility functions
 import json
 from typing import List
 
-import xml.etree.ElementTree as ET
 from urllib import parse as urllib_parse
 import requests
 from bioservices import xmltools