Upcase: bourbon smash undefined bourbon mixin Lession 5

Exercise Questions
1

Hey,

So trying to include a bourbon mixin into a file. It is causing an undefined mixin: border-style error? I thought these were all include with bourbon. Bourbon is in the Gem file.

.small-button {
  @include border-style(dashed null solid);
  background: $theme-orange;
  color: $theme-blue;
}