Mac: Auto generates duplicate kits in Configure Project page

Using Mac installer qt-enterprise-mac-x64-android-ios-5.4.1_2015-01-29_17-53-19-123.dmg on Mac 10.10.

In my environment, I have added an own build of qt dev branch, and the matching kit "5.5.0 (dev)"

Now I noticed that every time I open a project and I get into the "Configure Project" page, a duplicate of my kit "5.5.0 (dev)" is created.

This also happens using Qt Creator from the Qt Official online installer