diff --git a/2023/src/day09.clj b/2023/src/day09.clj
index 12712a4..12eecf9 100644
--- a/2023/src/day09.clj
+++ b/2023/src/day09.clj
@@ -12,13 +12,12 @@
         pyramid
         (recur (conj pyramid (mapv - (rest last-line) last-line)))))))
 
-(defn solve [reduction]
-  (->> (get-puzzle-input 9)
-       (map parse-line)
-       (map generate-pyramid)
-       (map reverse)
-       (map #(reduce reduction 0 %))
-       (reduce +)))
+(defn solve [reduction] (->> (get-puzzle-input 9)
+                             (map parse-line)
+                             (map generate-pyramid)
+                             (map reverse)
+                             (map #(reduce reduction 0 %))
+                             (reduce +)))
 
 ;; part 1
 (solve (fn [num line] (+ (peek line) num)))