#include <linux/dvb/frontend.h>
-#if IS_ENABLED(CONFIG_DVB_LNBP21)
+#if IS_REACHABLE(CONFIG_DVB_LNBP21)
/* override_set and override_clear control which
system register bits (above) to always set & clear */
extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,