diff --git a/fox32rom.def b/fox32rom.def
index 1fd3501..8533fa6 100644
--- a/fox32rom.def
+++ b/fox32rom.def
@@ -43,6 +43,7 @@ clear_menu_bar:                           jmp [0xF004400C]
 draw_menu_bar_root_items:                 jmp [0xF0044010]
 draw_menu_items:                          jmp [0xF0044014]
 close_menu:                               jmp [0xF0044018]
+menu_update_event:                        jmp [0xF004401C]
 
 ; event types
 const MOUSE_CLICK_EVENT_TYPE:    0x00000000
diff --git a/main.asm b/main.asm
index 87416b8..4f5438f 100644
--- a/main.asm
+++ b/main.asm
@@ -192,6 +192,7 @@ get_rom_version:
     data.32 draw_menu_bar_root_items
     data.32 draw_menu_items
     data.32 close_menu
+    data.32 menu_update_event
 
     org.pad 0xF004F000
 standard_font_width: