diff --git a/src/pvec/containers_pvec.ml b/src/pvec/containers_pvec.ml
index ac83d9e3..d622583f 100644
--- a/src/pvec/containers_pvec.ml
+++ b/src/pvec/containers_pvec.ml
@@ -1,4 +1,4 @@
-(* HAMT.
+(* Persistent vector structure with fast get/push/pop.
    We follow https://hypirion.com/musings/understanding-persistent-vector-pt-1
    and following posts. *)