Revert "Only fail with no default when the ..."

This reverts commit d846d956dc456b8324f6d11fba5ca6959ce38cbf, which is
now included on the 'v1.0.1-empty-hash-cherrypick'.

This master branch should now be equivalent to version 1.0.1 of the
published Gem, which was last releasted on April 15th 2013.