Overhead usage?

[developer]

Hello!

This is from PHPmyAdmin for a database, the line "Overhead 40 Bytes " is in red, is this kind of warning please?

What should I do?

Space usage : Type Usage
Data 200 Bytes
Index 2,048 Bytes
Overhead 40 Bytes
Effective 2,208 Bytes
Total 2,248 Bytes

[csn]

It's just space left over from DELETEs (or possibly UPDATES). OPTIMIZE TABLE will reclaim it.