diff --git a/pkg/arvo/sys/hoon.hoon b/pkg/arvo/sys/hoon.hoon
index b20922a263..c4bde28e58 100644
--- a/pkg/arvo/sys/hoon.hoon
+++ b/pkg/arvo/sys/hoon.hoon
@@ -13102,6 +13102,12 @@
                   |=  [%cnhp a=hoon b=spec]
                   [%make a b ~]
                 (rune hep %cnhp exqd)
+            ::
+                :-  '.'
+                %+  cook
+                  |=  [%cndt a=spec b=hoon]
+                  [%make b a ~]
+                (rune dot %cndt exqc)
             ::
                 :-  ':'
                 %+  cook