Series I-Bond intrest income for dependent (17yr old)

[JayKP]

Hello,

we bought Series I-bond on my son name when he was 16 (as minor under our account). We cash it out before he turned 18th (still under minor). We got 1099-INT on his name. We are claiming him as dependent and this interest is only under his name, no other income or interest. We, I and spouse, has our own 1099-INT for our I-bond. So how we file my son's 1099-INT under our tax return? 

Thanks