diff --git a/src/extra/widgets/msgbox/lv_msgbox.c b/src/extra/widgets/msgbox/lv_msgbox.c
index 96a8aab45..d8a6817e2 100644
--- a/src/extra/widgets/msgbox/lv_msgbox.c
+++ b/src/extra/widgets/msgbox/lv_msgbox.c
@@ -128,6 +128,7 @@ lv_obj_t * lv_msgbox_create(lv_obj_t * parent, const char * title, const char *
         const lv_font_t * font = lv_obj_get_style_text_font(mbox->btns, LV_PART_ITEMS);
         lv_coord_t btn_h = lv_font_get_line_height(font) + LV_DPI_DEF / 10;
         lv_obj_set_size(mbox->btns, btn_cnt * (2 * LV_DPI_DEF / 3), btn_h);
+        lv_obj_set_style_max_width(mbox->btns, lv_pct(100), 0);
         lv_obj_add_flag(mbox->btns, LV_OBJ_FLAG_EVENT_BUBBLE);    /*To see the event directly on the message box*/
     }