My CR1 was changed IR1 status in passport at POE, but Green Card says CR1 category!!

[nithahere]

I was issued a CR1 visa during my visa interview(on Dec 13th, 2011) as it was before my second wedding anniversary(Jan 13th) .At the POE, the CBP officer stamped and wrote down IR1 in my passport , since I entered USA on Jan 20th, 2012, AFTER my second wedding anniversary.I received my GC today but it states the category as CR1 instead of IR1.What can I do to get this rectified? Should I make an InfoPass appointment?Or send back my GC with a letter and marriage certificate ?I would really like to get it changed to IR1 , since I am eligible for it.Please help.Any guidance is deeply appreciated. I have already received my welcome letter and SSN .Thanks!