diff --git a/kernel-shared/ctree.c b/kernel-shared/ctree.c
index 74a10d65..f3075ce4 100644
--- a/kernel-shared/ctree.c
+++ b/kernel-shared/ctree.c
@@ -2797,9 +2797,9 @@ out:
  * Given a key and some data, insert an item into the tree.
  * This does all the path init required, making room in the tree if needed.
  */
-int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
-		      *root, struct btrfs_key *cpu_key, void *data, u32
-		      data_size)
+int btrfs_insert_item(struct btrfs_trans_handle *trans,
+		      struct btrfs_root *root, const struct btrfs_key *cpu_key,
+		      void *data, u32 data_size)
 {
 	int ret = 0;
 	struct btrfs_path *path;
diff --git a/kernel-shared/ctree.h b/kernel-shared/ctree.h
index e82344e8..d4577d74 100644
--- a/kernel-shared/ctree.h
+++ b/kernel-shared/ctree.h
@@ -1030,8 +1030,9 @@ struct btrfs_item_batch {
 	int nr;
 };
 
-int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
-		      *root, struct btrfs_key *key, void *data, u32 data_size);
+int btrfs_insert_item(struct btrfs_trans_handle *trans,
+		      struct btrfs_root *root, const struct btrfs_key *key,
+		      void *data, u32 data_size);
 int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root,
 			     struct btrfs_path *path,