Withdrawal and Grad School Admissions

[gutrot]

My University has a rather short add/drop period for classes, and I am currently enrolled in a high-level history seminar that I am looking to withdraw from. The reason for doing so is that I learned my thesis advisor will be teaching one next semester that is pertinent to my thesis topic and will greatly aid the writing process. Additionally, I could take a different class to catch up on credits for my double major. My grade is fine in the course, but it will still appear as a W in a class required for one of my two majors.

Will this have any bearing on admissions for top International Relations graduate programs? Should I stay put or withdraw?

I feel as though my explanation for withdrawing is more than reasonable if given the chance to articulate it.

Any advice is appreciated.