QtCreator creates directories with non ASCII characters that don't work

If I create a new project or add new Qt version to an existing project, QtCreator automatically chooses directories for compiling. It will be something like "build-MyProject-Android_for_armeabi_v7a_GCC_4_9_Qt_5_6_2-Release".

If I run localized QtCreator version (in my case Czech), the directory instead of Release ends with "Vydání". The non-ASCII characters then cause the build to fail on both Windows and Linux. I think only ASCII characters should be used in the path. There is no need to translate it IMO.