diff --git a/source-builder/defaults.mc b/source-builder/defaults.mc
index 8ed7003..98775e8 100644
--- a/source-builder/defaults.mc
+++ b/source-builder/defaults.mc
@@ -184,13 +184,12 @@ __mkdir:             exe,     required, '/bin/mkdir'
 __mkdir_p:           exe,     none,     '/bin/mkdir -p'
 __mv:                exe,     required, '/bin/mv'
 __nm:                exe,     required, '/usr/bin/nm'
-__objcopy:           exe,     optional, '/usr/bin/objcopy'
-__objdump:           exe,     optional, '/usr/bin/objdump'
+__objcopy:           exe,     none,     '/usr/bin/objcopy'
+__objdump:           exe,     none,     '/usr/bin/objdump'
 __patch_bin:         exe,     required, '/usr/bin/patch'
 __patch_opts:        none,    none,     '%{nil}'
 __patch:             exe,     none,     '%{__patch_bin} %{__patch_opts}'
 __perl:              exe,     optional, 'perl'
-__svn:               exe,     optional, '/usr/bin/svn'
 __ranlib:            exe,     required, 'ranlib'
 __rm:                exe,     required, '/bin/rm'
 __rmfile:            exe,     none,     '%{__rm} -f'