diff --git a/src/memuse.c b/src/memuse.c
index e448de403da3baca0b951301f1b54c15607a1433..7a58f71b189f885d76a986398c490cfcf81aebb5 100644
--- a/src/memuse.c
+++ b/src/memuse.c
@@ -240,7 +240,6 @@ static void memuse_rnode_binsert_child(struct memuse_rnode *child,
 static void memuse_rnode_add_child(struct memuse_rnode *node,
                                    struct memuse_rnode *child) {
 
-  /* XXX use a cache of allocations. */
   /* Extend the children list to include a new entry .*/
   void *mem = realloc(node->children,
                       (node->count + 1) * sizeof(struct memuse_rnode *));