converting ODS to CSV comes with random letter capitalization, why ?

Hello

Simple script to convert .ods to .csv
:

soffice --headless --convert-to csv
C:\FILE\foO.ods

When run on my main machine it behaves as expected, creates a foO.csv in the same directory as the source.

On the secondary machine however, the created file is named with capitalization : FOO.CSV

… why ? can i force it to not do that somehow ?