diff --git a/pkg/noun/manage.c b/pkg/noun/manage.c
index 279fe5fea5..e567f79d52 100644
--- a/pkg/noun/manage.c
+++ b/pkg/noun/manage.c
@@ -1011,7 +1011,7 @@ u3m_love(u3_noun pro)
   //
   u3j_reap(&jed_u);
   u3n_reap(byc_p);
-  u3z_reap(u3z_memo_keep, per_p);
+  u3z_reap(per_p);
 
   //  pop the stack
   //
diff --git a/pkg/noun/zave.c b/pkg/noun/zave.c
index 2958bad662..924bee8987 100644
--- a/pkg/noun/zave.c
+++ b/pkg/noun/zave.c
@@ -125,9 +125,7 @@ u3z_uniq(u3z_cid cid, u3_noun som)
 /* u3z_reap(): promote memoization cache state.
 */
 void
-u3z_reap(u3z_cid cid, u3p(u3h_root) har_p)
+u3z_reap(u3p(u3h_root) per_p)
 {
-  u3_assert(u3z_memo_toss != cid);
-
-  u3h_take_uni(_har(u3R, cid), har_p);
+  u3h_take_uni(u3R->cax.per_p, per_p);
 }
diff --git a/pkg/noun/zave.h b/pkg/noun/zave.h
index feff83f664..6857427eb4 100644
--- a/pkg/noun/zave.h
+++ b/pkg/noun/zave.h
@@ -50,10 +50,10 @@
       u3_noun
       u3z_uniq(u3z_cid cid, u3_noun som);
 
-    /* u3z_reap(): promote memoization cache state.
+    /* u3z_reap(): promote persistent memoization cache.
     */
       void
-      u3z_reap(u3z_cid cid, u3p(u3h_root) har_p);
+      u3z_reap(u3p(u3h_root) per_p);
 
     /* u3z_free(): free memoization cache.
     */