diff --git a/day06.py b/day06.py
index 99211cd..aacec05 100644
--- a/day06.py
+++ b/day06.py
@@ -3,7 +3,7 @@ from typing import Any
 
 
 def evolve_fishes(start_state: list[int], days: int) -> list[int]:
-    fishes = [0 for i in range(9)]
+    fishes = [0 for _ in range(9)]
     for x in start_state:
         fishes[x] += 1