diff --git a/src/http.c b/src/http.c
index fdb0d7e..17fd558 100644
--- a/src/http.c
+++ b/src/http.c
@@ -2022,10 +2022,9 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy,
                  the regular request below.  */
               proxyauth = NULL;
             }
-          /* Examples in rfc2817 use the Host header in CONNECT
-             requests.  I don't see how that gains anything, given
-             that the contents of Host would be exactly the same as
-             the contents of CONNECT.  */
+          request_set_header (connreq, "Host",
+                              aprintf ("%s:%d", u->host, u->port),
+                              rel_value);
 
           write_error = request_send (connreq, sock, 0);
           request_free (connreq);