diff --git a/src/include/gotty/tty.h b/src/include/gotty/tty.h
index 136bdc5..ad09d4d 100644
--- a/src/include/gotty/tty.h
+++ b/src/include/gotty/tty.h
@@ -28,5 +28,6 @@
 void configure_stdout(void);
 void restore_stdout(void);
 int connect_tty(void);
+void wait_for_tty_device(void);
 
 #endif