How to make Konqueror to be the default file manager?

When I press a folder and in most other situations Konqueror is used as I want it to be. However there are situations when I press a file path and Dolphin is opened instead. I am not entirely sure what the pattern is that Dolphin is used, but I think it is when the path is somehow presented as a link. For example in the software [Raccoon](http://raccoon.onyxbits.de/) provides a link to the downloaded APK, but when I press it, Dolphin is opened instead of Konqueror. How do I change this? By the way, I already did set this: It is German, but you should be able to get the gist. "Dateimanager" means "File Manager".