diff --git a/sys/unix/hints/macosx10.10 b/sys/unix/hints/macosx10.10
index 683284cca..880b4989f 100644
--- a/sys/unix/hints/macosx10.10
+++ b/sys/unix/hints/macosx10.10
@@ -265,7 +265,12 @@ build_package_root:
 	install -p doc/recover.6 $(PKGROOT_UG)/man/man6
 	install -p doc/Guidebook $(PKGROOT_UG)/doc
 	install -p dat/nhdat $(PKGROOT_UGLN)
-	sed 's/^GDBPATH/#GDBPATH/' sys/unix/sysconf | sed 's/^GREPPATH=\/bin\/grep/GREPPATH=\/usr\/bin\/grep/' | sed 's/^PANICTRACE_GDB=[12]/PANICTRACE_GDB=0/' > $(PKGROOT_UGLN)/sysconf
+	setnl=`echo 'nl="'; echo '"'`; eval "$$setnl"; \
+	sed 's/^GDBPATH/#GDBPATH/' sys/unix/sysconf \
+	| sed 's/^GREPPATH=\/bin\/grep/GREPPATH=\/usr\/bin\/grep/' \
+	| sed 's/^PANICTRACE_GDB=[12]/PANICTRACE_GDB=0/' \
+	| sed "s/^#OPTIONS=.*/&\\$${nl}OPTIONS=!use_darkgray/" \
+	> $(PKGROOT_UGLN)/sysconf
 	cd dat; install -p $(DATNODLB) ../$(PKGROOT_UGLN)
 # XXX these files should be somewhere else for good Mac form
 	touch $(PKGROOT_UGLN)/perm $(PKGROOT_UGLN)/record $(PKGROOT_UGLN)/logfile $(PKGROOT_UGLN)/xlogfile