diff --git a/src/openrct2-ui/windows/EditorObjectiveOptions.cpp b/src/openrct2-ui/windows/EditorObjectiveOptions.cpp
index 5d0759806f..2444f3dcfb 100644
--- a/src/openrct2-ui/windows/EditorObjectiveOptions.cpp
+++ b/src/openrct2-ui/windows/EditorObjectiveOptions.cpp
@@ -790,7 +790,7 @@ static void window_editor_objective_options_main_paint(rct_window* w, rct_drawpi
 {
     int32_t width;
     rct_string_id stringId;
-    uint32_t arg;
+    uint64_t arg;
 
     WindowDrawWidgets(w, dpi);
     window_editor_objective_options_draw_tab_images(w, dpi);