diff --git a/p1/p1.org b/p1/p1.org
index 66e74b9..ff0d8df 100644
--- a/p1/p1.org
+++ b/p1/p1.org
@@ -17,7 +17,9 @@ First load the data as a list of positive or negative numbers
 Then add the rotations starting from the initial offset and count the
 number of 0's mod 100; that is what we need for part 1
 #+begin_src emacs-lisp
-  (length (--filter (= 0 it) (--map (mod it 100) (-running-sum (append '(50) data)))))
+      (length (--filter (= 0 it)
+    		    (--map (mod it 100)
+  			   (-running-sum (cons 50 data)))))
 #+end_src
 
 #+RESULTS: