Chapter 7 and credit cards

I am going to be applying for chapter 7 bankruptcy soon. When I applied for one of the credit cards I stated my income was $31,000 or 32,000. I had just gotten a raise and was just guessing at what my income was going to be. I found out my income was actually $26,300 the year I applied. I've made $32,000 every year since. Will this be seen as fraud? I really didn't think my income was that low that year. I don't know what to do.