diff --git a/modules/aoc/aocCommand.ts b/modules/aoc/aocCommand.ts
index 586f3b2..5ebb145 100644
--- a/modules/aoc/aocCommand.ts
+++ b/modules/aoc/aocCommand.ts
@@ -25,7 +25,7 @@ export default {
     handler: async function(interaction: CommandInteraction) {
         const options = interaction.options as CommandInteractionOptionResolver;
         const requestedYear = options.getInteger("year", false);
-        const year =  (requestedYear === undefined)? DateTime.now().setZone("Europe/Berlin").year : requestedYear;
+        const year =  (requestedYear === null)? DateTime.now().setZone("Europe/Berlin").year : requestedYear;
         const embed = await embedLeaderboard(get("id", "aoc") as number, year);
         await interaction.reply({ embeds: [embed] });
     }