diff --git a/tools/boot/universe.sh b/tools/boot/universe.sh
--- a/tools/boot/universe.sh
+++ b/tools/boot/universe.sh
@@ -94,7 +94,7 @@
 	i386/i386 \
 	; do
     ta=${i##*/}
-    dobuild $ta _.boot.${ta}.no_zfs.log "MK_ZFS=no"
+    dobuild $ta _.boot.${ta}.no_zfs.log "MK_LOADER_ZFS=no"
 done
 
 # Build with firewire