diff --git a/bin/make-main-dist.sh b/bin/make-main-dist.sh
index e28299676efd9462c379a1a8fee3b5b4feb456f8..8919cd919a3aedcead9715f5d84163931addb6d5 100755
--- a/bin/make-main-dist.sh
+++ b/bin/make-main-dist.sh
@@ -127,7 +127,7 @@ do
 done
 
 # Create the directories and install the fasl files for asdf and defsystem
-for f in asdf defsystem
+for f in asdf defsystem unix
 do
     install -d ${GROUP} ${OWNER} -m 0755 $DESTDIR/lib/cmucl/lib/contrib/$f
     install ${GROUP} ${OWNER} -m 0644 $TARGET/contrib/$f/$f.$FASL $DESTDIR/lib/cmucl/lib/contrib/$f