Atom and Sublime open the same file


I am using sublime editor, and I’ve just downloaded Atom editor, I installed the language-harbour and linter-harbour package, file types are prg, ch, hb.

The problem is that when I open the atom editor and have a project with these file types, the sublime editor is also opens automatically, and any files with those extensions that attempt to modify also opens in sublime editor.

This does not happen with other files such python, why this behavior occurs and how can I avoid?.

I appreciate any help.