diff --git a/scene/gui/menu_button.cpp b/scene/gui/menu_button.cpp
index eb2e30ad0d..a8bb6dc250 100644
--- a/scene/gui/menu_button.cpp
+++ b/scene/gui/menu_button.cpp
@@ -89,9 +89,8 @@ void MenuButton::show_popup() {
        Size2i max_size;
        if (scr_usable.has_area()) {
                real_t max_h = scr_usable.get_end().y - rect.position.y;
-               real_t max_w = scr_usable.get_end().x - rect.position.x;
-               if (max_h >= 4 * rect.size.height && max_w >= rect.size.width) {
-                       max_size = Size2i(max_w, max_h);
+               if (max_h >= 4 * rect.size.height) {
+                       max_size = Size2i(RS::get_singleton()->get_maximum_viewport_size().x, max_h);
                }
        }
        popup->set_max_size(max_size);