diff --git a/extra/project-euler/059/059.factor b/extra/project-euler/059/059.factor
index 63a8e3e2c4..17621accfc 100644
--- a/extra/project-euler/059/059.factor
+++ b/extra/project-euler/059/059.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: arrays ascii assocs hashtables io.encodings.ascii io.files kernel math
     math.parser namespaces sequences sequences.lib sequences.private sorting
-    splitting grouping strings sets ;
+    splitting grouping strings sets accessors ;
 IN: project-euler.059
 
 ! http://projecteuler.net/index.php?section=problems&id=59
@@ -60,7 +60,7 @@ TUPLE: rollover seq n ;
 
 C: <rollover> rollover
 
-M: rollover length rollover-n ;
+M: rollover length n>> ;
 
 M: rollover nth-unsafe rollover-seq [ length mod ] keep nth-unsafe ;