Conflict with Mailchimp code snipped

[Inversion-des]

I discovered a problem that if on the page we have a Mailchimp form, linked with
<script src="//s3.amazonaws.com/downloads.mailchimp.com/js/signup-forms/popup/embed.js" data-dojo-config="usePlainJson: true, isDebug: false"></script>
And after this, we have linked SmoothScroll — Mailchimp form becomes broken.

In the SmoothScroll's init block this condition passes because define is defined in embed.js:

if (typeof define === 'function' && define.amd)
    define(function() {
        return SmoothScroll;
    });
…

and something goes wrong for Mailchimp…

I do not expect any resolution here, just wanted to share knowledge after an hour of debugging…