diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c
index a8d483c..b1f85cc 100644
--- a/fs/xfs/xfs_dir2_node.c
+++ b/fs/xfs/xfs_dir2_node.c
@@ -972,7 +972,7 @@
 			/*
 			 * One less used entry in the free table.
 			 */
-			free->hdr.nused = cpu_to_be32(-1);
+			be32_add(&free->hdr.nused, -1);
 			xfs_dir2_free_log_header(tp, fbp);
 			/*
 			 * If this was the last entry in the table, we can