diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index ca8ae1e1cc0a..f7153ade1be5 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -7556,7 +7556,7 @@ void mt_validate(struct maple_tree *mt)
 		MAS_WARN_ON(&mas, mte_dead_node(mas.node));
 		end = mas_data_end(&mas);
 		if (MAS_WARN_ON(&mas, (end < mt_min_slot_count(mas.node)) &&
-				(mas.max != ULONG_MAX))) {
+				(!mte_is_root(mas.node)))) {
 			pr_err("Invalid size %u of " PTR_FMT "\n",
 			       end, mas_mn(&mas));
 		}