diff --git a/2023/src/day01.clj b/2023/src/day01.clj
index c3d71e8..0cda77e 100644
--- a/2023/src/day01.clj
+++ b/2023/src/day01.clj
@@ -12,15 +12,10 @@
                  (re-find #"\d" (string/reverse %)))))
      (reduce +))
 
-(def numeric-value-map {"one"   1
-                        "two"   2
-                        "three" 3
-                        "four"  4
-                        "five"  5
-                        "six"   6
-                        "seven" 7
-                        "eight" 8
-                        "nine"  9})
+(def numeric-value-map
+  (->> ["one" "two" "three" "four" "five" "six" "seven" "eight" "nine"]
+       (map-indexed (fn [idx val] [val (inc idx)]))
+       (into {})))
 (defn numeric-value [s]
   (or (numeric-value-map s) s))