$rfs-base-value with rem breaks

[fogx]

Setting the $rfs-base-value in SCSS to $rfs-base-value: 1.25rem; as described in the configuration tutorial breaks the configuration, resulting in generated snippets like this:

  @include font-size(3rem);
  @include rfs(4rem, line-height);

->

font-size: calc(0.3703125remrem + 3.50625remvw);
line-height: calc(0.4703125remrem + 4.70625remvw);

i assume the example should be $rfs-base-value: 1.25; without the unit?