How to lose underscore symbol in the define name

[feni1388]

Hello...

I don't understand why there's underscore symbol added automatically when I use define name as you can see from the picture I attached.
There's no space or anything behind though. But if I use only alphabet for the name, there's no underscore symbol added. Only when I use the combination of alphabet and number that the symbol is added.
Can anyone give an explanation for this and have any solution on how to lose that symbol?
The list of items name that I have is all alphabet and number (KL07, GL43, etc), and I need to use lookup function for the pictures.
So it's a bit annoying to add the symbol on every items name I lookup.

 

[jkpieterse]

The reason is that KL07 is a valid cell address and cell addresses are not allowed as range names. To avoid issues, Excel automatically adds the underscore after the "name" to make it adhere to the rules.

 

[feni1388]

The reason is that KL07 is a valid cell address and cell addresses are not allowed as range names. To avoid issues, Excel automatically adds the underscore after the "name" to make it adhere to the rules.

I see...
Thank you for your explanation.