diff --git a/2021/day03/aoc-c.c b/2021/day03/aoc-c.c
index 387ba8c..4bd10f6 100644
--- a/2021/day03/aoc-c.c
+++ b/2021/day03/aoc-c.c
@@ -1,4 +1,4 @@
-/* aoc-c: Advent2021 game, day 2 parts 1 & 2
+/* aoc-c: Advent2021 game, day 3 parts 1 & 2
  *
  * Copyright (C) 2021 Bruno Raoult ("br")
  * Licensed under the GNU General Public License v3.0 or later.
diff --git a/2021/day04/aoc-c.c b/2021/day04/aoc-c.c
index e26329a..38512e5 100644
--- a/2021/day04/aoc-c.c
+++ b/2021/day04/aoc-c.c
@@ -1,4 +1,4 @@
-/* aoc-c: Advent2021 game, day 2 parts 1 & 2
+/* aoc-c: Advent2021 game, day 4 parts 1 & 2
  *
  * Copyright (C) 2021 Bruno Raoult ("br")
  * Licensed under the GNU General Public License v3.0 or later.