diff --git a/configs/d4client_passiveDNS_conf/destination b/configs/d4client_passiveDNS_conf/destination
index 9402ee02..69cef238 100644
--- a/configs/d4client_passiveDNS_conf/destination
+++ b/configs/d4client_passiveDNS_conf/destination
@@ -1 +1 @@
-d4pdns.circl.lu:443
+d4pdns.circl.lu:4443