diff --git a/include/block/aio.h b/include/block/aio.h
index 8fba6a3584..543717f294 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -482,14 +482,6 @@ void aio_set_fd_handler(AioContext *ctx,
                         IOHandler *io_poll_ready,
                         void *opaque);
 
-/* Set polling begin/end callbacks for a file descriptor that has already been
- * registered with aio_set_fd_handler.  Do nothing if the file descriptor is
- * not registered.
- */
-void aio_set_fd_poll(AioContext *ctx, int fd,
-                     IOHandler *io_poll_begin,
-                     IOHandler *io_poll_end);
-
 /* Register an event notifier and associated callbacks.  Behaves very similarly
  * to event_notifier_set_handler.  Unlike event_notifier_set_handler, these callbacks
  * will be invoked when using aio_poll().
diff --git a/util/aio-posix.c b/util/aio-posix.c
index 6cc6256d53..a8be940f76 100644
--- a/util/aio-posix.c
+++ b/util/aio-posix.c
@@ -180,9 +180,9 @@ void aio_set_fd_handler(AioContext *ctx,
     }
 }
 
-void aio_set_fd_poll(AioContext *ctx, int fd,
-                     IOHandler *io_poll_begin,
-                     IOHandler *io_poll_end)
+static void aio_set_fd_poll(AioContext *ctx, int fd,
+                            IOHandler *io_poll_begin,
+                            IOHandler *io_poll_end)
 {
     AioHandler *node = find_aio_handler(ctx, fd);
 
diff --git a/util/aio-win32.c b/util/aio-win32.c
index be5136e486..74d63fa21e 100644
--- a/util/aio-win32.c
+++ b/util/aio-win32.c
@@ -125,13 +125,6 @@ void aio_set_fd_handler(AioContext *ctx,
     aio_notify(ctx);
 }
 
-void aio_set_fd_poll(AioContext *ctx, int fd,
-                     IOHandler *io_poll_begin,
-                     IOHandler *io_poll_end)
-{
-    /* Not implemented */
-}
-
 void aio_set_event_notifier(AioContext *ctx,
                             EventNotifier *e,
                             bool is_external,