diff --git a/resources/koans.clj b/resources/koans.clj
index ae643a0..c1c6e93 100644
--- a/resources/koans.clj
+++ b/resources/koans.clj
@@ -61,7 +61,8 @@
                      20
                      10
                      60
-                     15]
+                     15
+                     30]
                "___" [+
                       *
                       (fn [f] (f 5))