diff --git a/backends/cryptodev.c b/backends/cryptodev.c
index 4d183f7237..c2356550c8 100644
--- a/backends/cryptodev.c
+++ b/backends/cryptodev.c
@@ -341,8 +341,7 @@ static void cryptodev_backend_set_throttle(CryptoDevBackend *backend, int field,
     if (!enabled) {
         throttle_init(&backend->ts);
         throttle_timers_init(&backend->tt, qemu_get_aio_context(),
-                             QEMU_CLOCK_REALTIME,
-                             cryptodev_backend_throttle_timer_cb, /* FIXME */
+                             QEMU_CLOCK_REALTIME, NULL,
                              cryptodev_backend_throttle_timer_cb, backend);
     }