diff --git a/src/win/win_ui.c b/src/win/win_ui.c
index 5ca1ce7bc..3fc03e191 100644
--- a/src/win/win_ui.c
+++ b/src/win/win_ui.c
@@ -1580,3 +1580,6 @@ plat_mouse_capture(int on)
 	mouse_capture = 0;
     }
 }
+
+void ui_init_monitor(int monitor_index) {}
+void ui_deinit_monitor(int monitor_index) {}