- INSTALLMAN1DIR => File::Spec->catdir($target_directories->{'MAN_DIR'}, 'man1'),
- INSTALLMAN3DIR => File::Spec->catdir($target_directories->{'MAN_DIR'}, 'man3'),
+ # ExtUtils::MakeMaker already manage $(DESTDIR)
+ INSTALLMAN1DIR => File::Spec->catdir(_strip_destdir($target_directories->{'MAN_DIR'}), 'man1'),
+ INSTALLMAN3DIR => File::Spec->catdir(_strip_destdir($target_directories->{'MAN_DIR'}), 'man3'),