diff --git a/src/subscriptions.c b/src/subscriptions.c
index a0cf5c0d..32988217 100644
--- a/src/subscriptions.c
+++ b/src/subscriptions.c
@@ -220,19 +220,22 @@ subscription_create_from_channel(channel_t *ch, unsigned int weight,
 
   subscription_reschedule(NULL);
 
-  if(s->ths_transport == NULL)
+  if(s->ths_transport == NULL) {
     tvhlog(LOG_NOTICE, "subscription", 
 	   "No transponder available for subscription \"%s\" "
 	   "to channel \"%s\"",
 	   s->ths_title, ch->ch_name);
-  else
+  } else {
+    const char *n;
+    n = s->ths_transport->tht_networkname(s->ths_transport);
     tvhlog(LOG_INFO, "subscription", 
 	   "\"%s\" subscribing on \"%s\", weight: %d, network: \"%s\", "
 	   "source: \"%s\", quality: %d",
 	   s->ths_title, ch->ch_name, weight,
-	   s->ths_transport->tht_networkname(s->ths_transport),
+	   n ?: "<N/A>",
 	   s->ths_transport->tht_sourcename(s->ths_transport),
 	   s->ths_transport->tht_quality_index(s->ths_transport));
+  }
   return s;
 }
 
diff --git a/src/transports.c b/src/transports.c
index f92b65f4..8dd54cfd 100644
--- a/src/transports.c
+++ b/src/transports.c
@@ -633,6 +633,7 @@ transport_build_stream_start_msg(th_transport_t *t)
 {
   htsmsg_t *m, *streams, *c;
   th_stream_t *st;
+  const char *n;
 
   lock_assert(&t->tht_stream_mutex);
   
@@ -651,7 +652,9 @@ transport_build_stream_start_msg(th_transport_t *t)
   }
 
   htsmsg_add_msg(m, "streams", streams);
-  htsmsg_add_str(m, "network", t->tht_networkname(t));
+  if((n = t->tht_networkname(t)) != NULL)
+      htsmsg_add_str(m, "network", n);
+
   htsmsg_add_str(m, "source", t->tht_sourcename(t));
   return m;
 }
diff --git a/src/webui/extjs.c b/src/webui/extjs.c
index ddcce436..136c4914 100644
--- a/src/webui/extjs.c
+++ b/src/webui/extjs.c
@@ -567,7 +567,7 @@ build_transport_msg(th_transport_t *t)
 {
   htsmsg_t *r = htsmsg_create_map();
   th_stream_t *st;
-
+  const char *n;
   char video[200];
   char audio[200];
   char subtitles[200];
@@ -577,7 +577,8 @@ build_transport_msg(th_transport_t *t)
   htsmsg_add_str(r, "name", t->tht_svcname);
 
   htsmsg_add_str(r, "provider", t->tht_provider ?: "");
-  htsmsg_add_str(r, "network", t->tht_networkname(t));
+  if((n = t->tht_networkname(t)) != NULL)
+    htsmsg_add_str(r, "network", n);
   htsmsg_add_str(r, "source", t->tht_sourcename(t));
 
   htsmsg_add_str(r, "status", "");