diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 08e41a993eb6..e0935a593a1a 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -3654,10 +3654,9 @@ static inline int mas_root_expand(struct ma_state *mas, void *entry)
 		slot++;
 	mas->depth = 1;
 	mas_set_height(mas);
-
+	ma_set_meta(node, maple_leaf_64, 0, slot);
 	/* swap the new root into the tree */
 	rcu_assign_pointer(mas->tree->ma_root, mte_mk_root(mas->node));
-	ma_set_meta(node, maple_leaf_64, 0, slot);
 	return slot;
 }