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Picture this nightmare: You apply for a mortgage, but your application gets rejected. Suddenly, you’re hit with an overwhelming wave of embarrassment, shock, and horror. It’s like having your credit card denied at the Shoprite. So. Much. Shame.

Sadly, this is a reality for some home buyers. According to a recent Federal Reserve study, one out of every eight home loan applications (12%) ends in a rejection.

There are a number of reasons mortgage applications get denied‚ and the saddest part is that many could have been avoided quite easily, had only the applicants known certain things were no-nos. So, before you’re the next home buyer who gets burned by sheer ignorance, scan this list, and make sure you aren’t making any of these five grave mistakes, which could land your mortgage application in the “no” pile.

1. You didn’t use credit cards enough

Some people think credit card debt is the kiss of death … but guess what? It’s also a way to establish a credit history that shows you’ve got a solid track record paying off past debts.

While a poor credit history riddled with late payments can certainly call your application into question, it’s just as bad, and perhaps worse, to have little or no credit history at all. Most lenders are reluctant to fork over money to individuals without substantial credit history. It’s as if you’re a ghost: Who’s to say you won’t disappear?

According to a recent report by the Consumer Financial Protection Bureau, roughly 45 million Americans are characterized as “credit invisible”—which means they don’t have a credit report on file with the three major credit bureaus (Equifax, Experian, and TransUnion).

There’s a silver lining, though, for those who don’t have credit established. Some lenders will use alternative data, such as rent payments, cellphone bills, and school tuition, to assess your credit worthiness, says Staci Titsworth, a regional manager at PNC Mortgage in Pittsburgh.

2. You opened new credit cards recently