diff --git a/plugins/cosigner_pool/qt.py b/plugins/cosigner_pool/qt.py
index 52d6a8f34..524d62b76 100644
--- a/plugins/cosigner_pool/qt.py
+++ b/plugins/cosigner_pool/qt.py
@@ -43,9 +43,7 @@ import sys
 import traceback
 
 
-PORT = 12344
-HOST = 'cosigner.electrum.org'
-server = ServerProxy('http://%s:%d'%(HOST,PORT), allow_none=True)
+server = ServerProxy('https://cosigner.electrum.org/', allow_none=True)
 
 
 class Listener(util.DaemonThread):