diff --git a/dvb-core/dvb_frontend.c b/dvb-core/dvb_frontend.c
index c985942..8131125 100644
--- a/dvb-core/dvb_frontend.c
+++ b/dvb-core/dvb_frontend.c
@@ -973,6 +973,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 
 	c->stream_id = NO_STREAM_ID_FILTER;
 	c->pls = NO_SCRAMBLING_CODE;
+	c->input = NO_INPUT;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index 03a580a..a77bdc3 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -742,6 +742,7 @@ enum atscmh_rs_code_mode {
 #define NO_STREAM_ID_FILTER	(~0U)
 #define NO_SCRAMBLING_CODE	(~0U)
 #define LNA_AUTO                (~0U)
+#define NO_INPUT                (~0U)
 
 /**
  * enum fecap_scale_params - scale types for the quality parameters.