I am running bcftools isec on two bcftools compressed vcf files (vcf.gz) with root permission. However, bcftools (1.5-17-g4f134df-dirty) isec tries to create a directory called README.txt inside the target directory.

bcftools isec test1.vcf.gz test2.vcf.gz -p MyDir -Oz -o MyOut.vcf.gz

The notification I recieve is:

MyDir/README.txt: Is a directory

I would like a quick fix, without having to reinstall bcftools.

Thanks in advance!