Remove category slug if no category selected in custom post.

Hi,

I have created a custom post corporates having industries as categories. My single page URL looks like follows:

:site-url/industries/%industry-category%/single-post-slug

Using this plugin I have made the name of the category dynamic. So instead of %industry-category% the category of the post gets printed.

Now the problem is if a post does not contain any category(industry). The %industry-category% gets printed in the URL. Which looks really bad and also not good for my SEO.

In this scenario, if a category is not available %industry-category% should not get printed.

Thanks