diff --git a/src/unix/unix_sdl.c b/src/unix/unix_sdl.c
index f4adf9581..055867570 100644
--- a/src/unix/unix_sdl.c
+++ b/src/unix/unix_sdl.c
@@ -516,3 +516,6 @@ wchar_t* ui_window_title(wchar_t* str)
 #endif
     return str;
 }
+
+void ui_init_monitor(int monitor_index) {}
+void ui_deinit_monitor(int monitor_index) {}