Hidden contents macro showing in search

[HH]

Hi, 

I've set up a hidden contents macro for my confluence instance. This is so I can put synonyms and keywords into the page without the user seeing it. 

It works fine, however I have noticed that when you search on the keywords or synonyms it shows all the data you might have put into the macro within the search result. 

Can anyone think of a way to prevent that? 

Thanks!

Hollie