Conditional formatting, three conditions

Hi all. I've searched some conditional formatting topics on here, but I still can't seem to get my formula to work. I have a data set where each row is a person, and each column is the number of logins they've made to a site during a weekly period. I'm attempting to highlight the week in which any given user stops using the website. The formula I'm trying is:

=AND(NOT(L2=0),N2=0,M2=0)

Where column L is week 1, column N is week 2, and so forth. This is the formatting for the cells in column M. I'd like it so that if L is greater than 0, M is equal to 0, and N is equal to zero, then the cell in column M is highlighted red. Excel seems to accept the formula, but some cells are getting highlighted which aren't actually meeting the conditions...

Any thoughts?

Wow.... can't believe it was that simple of a change. Thanks!