diff --git a/storage/innobase/sync/sync0sync.c b/storage/innobase/sync/sync0sync.c
index 8e082be33f7..af6e3f0e275 100644
--- a/storage/innobase/sync/sync0sync.c
+++ b/storage/innobase/sync/sync0sync.c
@@ -1338,8 +1338,7 @@ sync_thread_add_level(
 		break;
 	case SYNC_IBUF_INDEX_TREE:
 		if (sync_thread_levels_contain(array, SYNC_FSP)) {
-			ut_a(sync_thread_levels_g(
-				     array, SYNC_FSP_PAGE - 1, TRUE));
+			ut_a(sync_thread_levels_g(array, level - 1, TRUE));
 		} else {
 			ut_a(sync_thread_levels_g(
 				     array, SYNC_IBUF_TREE_NODE - 1, TRUE));