It seems right.
Makefile
USE_TEX= texlive dvipsk kpathsea pdftex
bsd.tex.mk# default TeX distribution. "texlive"
TEX_DEFAULT?= texlive
.if ${TEX_DEFAULT} != texlive
IGNORE= Only 'texlive' is supported as value for TEX_DEFAULT
.endif
texlive is default. And if you read bsd.tex.mk it is not under "The
other valid keywords"