diff --git a/freebsd/sys/dev/cadence/if_cgem.c b/freebsd/sys/dev/cadence/if_cgem.c
index b9c32bd4..1c46746b 100644
--- a/freebsd/sys/dev/cadence/if_cgem.c
+++ b/freebsd/sys/dev/cadence/if_cgem.c
@@ -1452,6 +1452,7 @@ cgem_mediachange(struct cgem_softc *sc,	struct mii_data *mii)
 static void
 cgem_add_sysctls(device_t dev)
 {
+#ifndef __rtems__
 	struct cgem_softc *sc = device_get_softc(dev);
 	struct sysctl_ctx_list *ctx;
 	struct sysctl_oid_list *child;
@@ -1624,6 +1625,7 @@ cgem_add_sysctls(device_t dev)
 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "rx_frames_udp_csum_errs",
 			CTLFLAG_RD, &sc->stats.rx_udp_csum_errs, 0,
 			"Number frames received with UDP checksum errors");
+#endif /* __rtems__ */
 }