diff --git a/web/lib/discord.ts b/web/lib/discord.ts
index 58fc224..7b73b2f 100644
--- a/web/lib/discord.ts
+++ b/web/lib/discord.ts
@@ -81,7 +81,7 @@ export async function checkBotMembership(guildIds: string[]): Promise<boolean[]>
                 "Content-Type": "application/json",
                 "X-API-Key": process.env.BOT_API_KEY as string
             },
-            body: `{"guild_ids": [${guildIds.join(",")}]}`,
+            body: JSON.stringify({ guild_ids: guildIds }),
             next: { revalidate: 0 } // Don't cache this as it might change
         });