I had family coverage on a HSA from Jan 1 to Nov 31th, then individual coverage through Dec 31. Have I made a contribution to a HSA based on the last month-rule?

On 1/01/16 I was covering myself and my wife on my high deductible medical plan.  We divorced on 11/22/16 and her coverage on my plan ended on 11/31/16.  I have maintained coverage for myself through the end of 2016. 

I have calculated that I have not over contributed to the plan based on the 11 months family / 1 month individual contribution limit.