diff --git a/pkg/arvo/neo/cod/std/src/imp/circle.hoon b/pkg/arvo/neo/cod/std/src/imp/circle.hoon
index f7e1e8cf90..ccc3229ad7 100644
--- a/pkg/arvo/neo/cod/std/src/imp/circle.hoon
+++ b/pkg/arvo/neo/cod/std/src/imp/circle.hoon
@@ -1,5 +1,5 @@
 /@  circle
-/@  ircle-diff
+/@  circle-diff
 /-  oxy=oxygen
 ^-  kook:neo
 |%