diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index 9dfa03d59917..0b11702fb13c 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -189,7 +189,6 @@ __DEFAULT_NO_OPTIONS = \
     NAND \
     OFED \
     OPENLDAP \
-    RCS \
     REPRODUCIBLE_BUILD \
     SHARED_TOOLCHAIN \
     SORT_THREADS \