DRC ERROR

Hi everybody, 

I'm writing because I would like ask to you a suggestion about DRC.

For examle: I have a net ( It is a shunt) with an min line width of 1 mm. I need to read the current so I have to take the signal an to go to comparator. The part of net that go to comparator is 0,2 mm ( it hasn't to be1 m) and correctly i have DRC error. 

Do you know a way for not have this error only part of small net? Do you have any suggestions?

Thanks.