Single Click File Opening

[Adapsys]

This may be a silly question but when I have multiple finder windows open and I switch from one to the other then single click on a file, it opens the file.

This is really bugging me as I only want to select the file (to move it etc). Is there any way to prevent single click file opening?

Thanks in advance.

 

[SilentPanda]

Are you using a mouse or a trackpad?

 

[r.j.s]

Do you have any third-party mouse software installed?

 

[Adapsys]

Ah yes, I'm using a Dell Bluetooth Mouse. I have not installed any drivers etc (as its Dell I don't think they would make Mac drivers).