diff --git a/lib/libdvbv5/dvb-sat.c b/lib/libdvbv5/dvb-sat.c
index a7aeee52..6c613b17 100644
--- a/lib/libdvbv5/dvb-sat.c
+++ b/lib/libdvbv5/dvb-sat.c
@@ -524,6 +524,8 @@ static int dvbsat_diseqc_set_input(struct dvb_v5_fe_parms_priv *parms,
        int mini_b = 0;
        struct diseqc_cmd cmd;

+       const struct dvb_sat_lnb_priv *lnb = (void *)parms->p.lnb;
+
        /* Negative numbers means to not use a DiSEqC switch */
        if (parms->p.sat_number < 0)
                return 0;
@@ -585,6 +587,10 @@ int dvb_sat_real_freq(struct dvb_v5_fe_parms *p, int freq)
        struct dvb_v5_fe_parms_priv *parms = (void *)p;
        int new_freq, i;

+       const struct dvb_sat_lnb_priv *lnb = (void *)p->lnb;
+       if (!lnb)
+               return freq;
+
        if (!dvb_fe_is_satellite(p->current_sys))
                return freq;