diff --git a/include/seastar/core/reactor.hh b/include/seastar/core/reactor.hh
index 645180fbf18..a16a81c604d 100644
--- a/include/seastar/core/reactor.hh
+++ b/include/seastar/core/reactor.hh
@@ -428,6 +428,7 @@ private:
     future<temporary_buffer<char>>
     do_recv_some(pollable_fd_state& fd, internal::buffer_allocator* ba);
 
+    void configure(const reactor_options& opts);
     int do_run();
 public:
     explicit reactor(std::shared_ptr<smp> smp, alien::instance& alien, unsigned id, reactor_backend_selector rbs, reactor_config cfg);
@@ -469,8 +470,6 @@ public:
     /// @private
     void update_shares_for_queues(internal::priority_class pc, uint32_t shares);
 
-    void configure(const reactor_options& opts);
-
     server_socket listen(socket_address sa, listen_options opts = {});
 
     future<connected_socket> connect(socket_address sa);