diff --git a/public/js/icinga/behavior/datetime-picker.js b/public/js/icinga/behavior/datetime-picker.js
index 4d854a6dd..e8fd23879 100644
--- a/public/js/icinga/behavior/datetime-picker.js
+++ b/public/js/icinga/behavior/datetime-picker.js
@@ -64,6 +64,7 @@
             var dateTimeFormatter = _this.createFormatter(! disableDate, enableTime);
             var options = {
                 locale: _this.loadFlatpickrLocale(),
+                appendTo: this.form.parentNode,
                 altInput: true,
                 enableTime: enableTime,
                 noCalendar: disableDate,