diff --git a/c/pongd.c b/c/pongd.c
index 0171606..95f712e 100644
--- a/c/pongd.c
+++ b/c/pongd.c
@@ -50,7 +50,14 @@ int main(int argc, char**argv) {
 	printf ("Set the timer to two seconds.\n");
 	ipc_context_timer (ctx, 2000);
 
-	printf ("Loop over events.\n");
+	printf ("Listening to the standard input (press enter to quit).\n");
+	ret = ipc_add_external (ctx, 0);
+
+	if (ret != 0) {
+		return err (ctx, "Cannot listen to standard input.");
+	}
+
+	printf ("Loop over events. Press enter to quit.\n");
 	char should_continue = 1;
 	size_t count = 0;
 	size_t count_timer = 0;
@@ -68,7 +75,11 @@ int main(int argc, char**argv) {
 
 		switch ((enum event_types) event_type) {
 		case ERROR:         return err(ctx, "Error.");
-		case EXTERNAL:      return err(ctx, "External (shouldn't happen).");
+		case EXTERNAL: {
+			printf("Quitting!\n");
+			should_continue = 0;
+			break;
+		}
 		case SWITCH_RX:     return err(ctx, "Switch RX (shouldn't happen).");
 		case SWITCH_TX:     return err(ctx, "Switch TX (shouldn't happen).");
 		case CONNECTION:    { printf ("New connection.\n");    break; }