diff --git a/dump1090.h b/dump1090.h
index 8b9d564..50b7b15 100644
--- a/dump1090.h
+++ b/dump1090.h
@@ -362,6 +362,7 @@ struct {                             // Internal state
     unsigned int stat_fatsv_connections;
     unsigned int stat_raw_connections;
     unsigned int stat_beast_connections;
+    unsigned int stat_beast_connections_in;
     unsigned int stat_out_of_phase;
     unsigned int stat_ph_demodulated0;
     unsigned int stat_ph_demodulated1;
diff --git a/faup1090.c b/faup1090.c
index 21b336b..8b98d58 100644
--- a/faup1090.c
+++ b/faup1090.c
@@ -289,6 +289,12 @@ void backgroundTasks(void) {
     if (Modes.interactive) {
         interactiveShowData();
     }
+
+    // If we have lost our input connection, exit
+    if (Modes.stat_beast_connections_in == 0) {
+        fprintf(stderr, "Lost ADS-B data connection, exiting.\n");
+        Modes.exit = 1;
+    }
 }
 
 //
@@ -394,6 +400,7 @@ int main(int argc, char **argv) {
     c->service =
     Modes.bis = fd;
     Modes.clients = c;
+    Modes.stat_beast_connections_in = 1;
 
     while (Modes.net_only) {
         if (Modes.exit) exit(0); // If we exit net_only nothing further in main()
diff --git a/net_io.c b/net_io.c
index 7b06a8a..1c9f43f 100644
--- a/net_io.c
+++ b/net_io.c
@@ -131,6 +131,7 @@ struct client * modesAcceptClients(void) {
 			if (*services[j].socket == Modes.sbsos) Modes.stat_sbs_connections++;
 			if (*services[j].socket == Modes.ros)   Modes.stat_raw_connections++;
 			if (*services[j].socket == Modes.bos)   Modes.stat_beast_connections++;
+            if (*services[j].socket == Modes.bis)   Modes.stat_beast_connections_in++;
             if (*services[j].socket == Modes.fatsvos)   Modes.stat_fatsv_connections++;
 
 			j--; // Try again with the same listening port
@@ -171,6 +172,8 @@ void modesFreeClient(struct client *c) {
         if (Modes.stat_raw_connections) Modes.stat_raw_connections--;
     } else if (c->service == Modes.bos) {
         if (Modes.stat_beast_connections) Modes.stat_beast_connections--;
+    } else if (c->service == Modes.bis) {
+        if (Modes.stat_beast_connections_in) Modes.stat_beast_connections_in--;
     } else if (c->service == Modes.fatsvos) {
         if (Modes.stat_fatsv_connections) Modes.stat_fatsv_connections--;
     }