In the IUPAC name of following compound, there is something wrong. Find the mistake.

Here, amide group has higher priority than keto group, therefore former is the principal functional group and later is a locant. The longest carbon chain starting from carbon of the amide group would be the parent chain. Hence, in fact parent chain has eight carbon as:

Correct IUPAC name would be N-ethyl-5-(1-oxoethyl) octanamide.