diff --git a/lib/btree.c b/lib/btree.c
index 41859a8202184e1006a53be2bf794ccc6420c755..c9c6f03515269aa78baad42ecf86f4d649a45a5c 100644
--- a/lib/btree.c
+++ b/lib/btree.c
@@ -95,7 +95,8 @@ static unsigned long *btree_node_alloc(struct btree_head *head, gfp_t gfp)
 	unsigned long *node;
 
 	node = mempool_alloc(head->mempool, gfp);
-	memset(node, 0, NODESIZE);
+	if (likely(node))
+		memset(node, 0, NODESIZE);
 	return node;
 }