Incorrect month on resume

I was told by the company recruiter the hiring manager will move forward with me regarding the open position, but not told of any compensation yet. I've waited one week since last talk with the recruiter.

While waiting anxiously, I try to figure out what they are doing takes so long. I noted I put incorrect month on my resume. It should be Dec. 05 rather than Jan 06. Does anyone here knows if the mistake will adversely affect my potential offer? Many thanks.