diff --git a/tools/build/mk/OptionalObsoleteFiles.inc b/tools/build/mk/OptionalObsoleteFiles.inc
index af78fcb4cac5..eea74bf2e22c 100644
--- a/tools/build/mk/OptionalObsoleteFiles.inc
+++ b/tools/build/mk/OptionalObsoleteFiles.inc
@@ -6954,6 +6954,7 @@ OLD_FILES+=usr/lib/libncurses_p.a
 OLD_FILES+=usr/lib/libncursesw_p.a
 OLD_FILES+=usr/lib/libnetgraph_p.a
 OLD_FILES+=usr/lib/libnetmap_p.a
+OLD_FILES+=usr/lib/libnss_tacplus_p.a
 OLD_FILES+=usr/lib/libnv_p.a
 OLD_FILES+=usr/lib/libnvpair_p.a
 OLD_FILES+=usr/lib/libopencsd_p.a