pcmanfm-qt-2.0.0-alt1.x86_64 freedesktop-desktop info desktop-file-validate utility printed the following message(s): /usr/share/applications/pcmanfm-qt.desktop: hint: value item "FileManager" in key "Categories" in group "Desktop Entry" can be extended with another category among the following categories: System;FileTools; /usr/share/applications/pcmanfm-qt.desktop: warning: value "x-directory/normal;inode/directory;" for key "MimeType" in group "Desktop Entry" contains value "x-directory/normal" which is a MIME type that should probably not be used: "x-directory" is an old media type that should be replaced with a modern equivalent;