diff --git a/tests/btrfs/159 b/tests/btrfs/159
index ad98ee1f..f3cc13fd 100755
--- a/tests/btrfs/159
+++ b/tests/btrfs/159
@@ -64,7 +64,7 @@ _require_metadata_journaling $SCRATCH_DEV
 _init_flakey
 _mount_flakey
 
-# Create our test file with 831 extents of 256Kb each. Before each extent, there
+# Create our test file with 832 extents of 256Kb each. Before each extent, there
 # is a 256Kb hole (except for the first extent, which starts at offset 0). This
 # creates two leafs in the filesystem tree, with the extent at offset 216530944
 # being the last item in the first leaf and the extent at offset 217055232 being
@@ -78,6 +78,8 @@ done
 # Now persist everything done so far.
 sync
 
+btrfs-debug-tree $SCRATCH_DEV >>$seqres.full 2>&1
+
 # Now punch a hole that covers part of the extent at offset 216530944.
 $XFS_IO_PROG -c "fpunch $((216530944 + 128 * 1024 - 4000)) 256K" \
             -c "fsync" \