diff --git a/018 b/018
index fdb3bf5f..8b7fa10e 100755
--- a/018
+++ b/018
@@ -122,7 +122,7 @@ rm -f $seq.out $seq.full
 umount $SCRATCH_DEV >/dev/null 2>&1
 
 _full "mkfs"
-mkfs -t xfs -f $SCRATCH_DEV                 >>$seq.full 2>&1 \
+mkfs -t xfs -f -lsize=2000b $SCRATCH_DEV    >>$seq.full 2>&1 \
     || _fail "mkfs failed"
 _full " mount"
 mount -t xfs $SCRATCH_DEV $SCRATCH_MNT      >>$seq.full 2>&1 \