diff --git a/lib/isc/netmgr/http.c b/lib/isc/netmgr/http.c
index 9b44394dbe..20d4980796 100644
--- a/lib/isc/netmgr/http.c
+++ b/lib/isc/netmgr/http.c
@@ -839,6 +839,8 @@ http_call_connect_cb(isc_nmsocket_t *sock, isc_result_t result) {
 	req->cb.connect = sock->connect_cb;
 	req->cbarg = sock->connect_cbarg;
 	req->handle = isc__nmhandle_get(sock, &sock->peer, &sock->iface->addr);
+
+	isc__nmsocket_clearcb(sock);
 	isc__nm_connectcb_force_async(sock, req, result);
 }