diff --git a/src/Site/SiteAnnouncer.py b/src/Site/SiteAnnouncer.py
index f2473e0b..10ca778e 100644
--- a/src/Site/SiteAnnouncer.py
+++ b/src/Site/SiteAnnouncer.py
@@ -335,7 +335,7 @@ class SiteAnnouncer(object):
             'event': 'started'
         }
 
-        url = protocol + "://" + tracker_address + "?" + urllib.urlencode(params)
+        url = protocol + "://" + tracker_address + "?" + urllib.parse.urlencode(params)
 
         s = time.time()
         response = None