Intellij Custom Scope Hiding package-info.java

Intellij Custom Scope Hiding package-info.java

I have a custom scope for a java module within a project. The scope is
automatically excluding package-info.java from the hierarchy of files. The
file is included in the scope definition (in the scope it is highlighted
green and recursively included). It seems that I can't see these
package-info.java files from any of the scopes and not just my custom
version.
Does Intellij filter these files out? If so, can this filter be disabled?
I'm using Intellij IDEA 12.4 Ultimate on Windows 7.