diff --git a/src/phone.h b/src/phone.h
index eec905e..5f853f5 100644
--- a/src/phone.h
+++ b/src/phone.h
@@ -90,6 +90,7 @@ void phone_show_logs(Phone * phone, gboolean show);
 void phone_show_messages(Phone * phone, gboolean show);
 void phone_show_read(Phone * phone, gboolean show, ...);
 void phone_show_settings(Phone * phone, gboolean show);
+void phone_show_system(Phone * phone, gboolean show);
 void phone_show_write(Phone * phone, gboolean show, ...);
 
 /* logs */