diff --git a/src/dvb/dvb_fe.c b/src/dvb/dvb_fe.c
index 7120ab5c..b1f9a314 100644
--- a/src/dvb/dvb_fe.c
+++ b/src/dvb/dvb_fe.c
@@ -510,7 +510,6 @@ dvb_fe_tune(th_dvb_mux_instance_t *tdmi, const char *reason)
     }
 
     /* Mark as bad */
-    dvb_mux_set_enable(tdmi, 0);
     return SM_CODE_TUNING_FAILED;
   }   
 
diff --git a/src/dvb/dvb_multiplex.c b/src/dvb/dvb_multiplex.c
index 37d3ca17..74c07341 100644
--- a/src/dvb/dvb_multiplex.c
+++ b/src/dvb/dvb_multiplex.c
@@ -162,6 +162,14 @@ dvb_mux_create(th_dvb_adapter_t *tda, const struct dvb_mux_conf *dmc,
 
   lock_assert(&global_lock);
 
+  /* Reject out of range */
+  if ((dmc->dmc_fe_params.frequency < tda->tda_fe_info->frequency_min) ||
+      (dmc->dmc_fe_params.frequency > tda->tda_fe_info->frequency_max)) {
+    tvhlog(LOG_DEBUG, "dvb", "mux rejected with frequency %d",
+           dmc->dmc_fe_params.frequency);
+    return NULL;
+  }
+
   /* HACK - we hash/compare based on 2KHz spacing and compare on +/-500Hz */
   LIST_FOREACH(tdmi, &tda->tda_mux_list, tdmi_adapter_hash_link) {
     if(tdmi_compare_key(&tdmi->tdmi_conf, dmc))
@@ -1171,7 +1179,7 @@ dvb_mux_add_by_params(th_dvb_adapter_t *tda,
   tdmi = dvb_mux_create(tda, &dmc, 0, 0xffff, NULL, NULL, 1, 1, NULL, NULL);
 
   if(tdmi == NULL)
-    return "Mux already exist";
+    return "Mux already exists or bad parameters";
 
   return NULL;
 }