diff --git a/lib/xarray.c b/lib/xarray.c
index 091e2c927915..ecd2e4f71aa8 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -1027,7 +1027,7 @@ void xas_split_alloc(struct xa_state *xas, void *entry, unsigned int order,
 	unsigned int mask = xas->xa_sibs;
 
 	/* XXX: no support for splitting really large entries yet */
-	if (WARN_ON(xas->xa_shift + 2 * XA_CHUNK_SHIFT < order))
+	if (WARN_ON(xas->xa_shift + 2 * XA_CHUNK_SHIFT <= order))
 		goto nomem;
 	if (xas->xa_shift + XA_CHUNK_SHIFT > order)
 		return;