diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index c151175..ac3f527 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -518,6 +518,7 @@
 int xfs_btree_increment(struct xfs_btree_cur *, int, int *);
 int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
 int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *);
+int xfs_btree_updkey(struct xfs_btree_cur *, union xfs_btree_key *, int);
 
 /*
  * Helpers.