diff --git a/kernel/hashlib.h b/kernel/hashlib.h
index 188b176b4..ff33c3db3 100644
--- a/kernel/hashlib.h
+++ b/kernel/hashlib.h
@@ -265,7 +265,7 @@ struct hash_obj_ops {
 	template<typename T>
 	static inline Hasher hash_into(const T *a, Hasher h) {
 		if (a)
-			a->hash_into(h);
+			h = a->hash_into(h);
 		else
 			h.eat(0);
 		return h;