diff --git a/src/input/mpegts/linuxdvb/linuxdvb_lnb.c b/src/input/mpegts/linuxdvb/linuxdvb_lnb.c
index e3c33d27..f7607f42 100644
--- a/src/input/mpegts/linuxdvb/linuxdvb_lnb.c
+++ b/src/input/mpegts/linuxdvb/linuxdvb_lnb.c
@@ -105,6 +105,7 @@ static int
 linuxdvb_lnb_standard_tune
   ( linuxdvb_diseqc_t *ld, dvb_mux_t *lm, linuxdvb_satconf_ele_t *ls, int fd )
 {
+  /* en50494 does not use the voltage tune. this is happend in the switch */
   if (ls->lse_en50494)
     return 0;