diff --git a/src/structures/GuildMember.js b/src/structures/GuildMember.js
index 5c3785e85..9615aeb8d 100644
--- a/src/structures/GuildMember.js
+++ b/src/structures/GuildMember.js
@@ -110,7 +110,7 @@ class GuildMember {
 
   /**
    * The time this member joined the guild
-   * @type {Date}
+   * @type {?Date}
    * @readonly
    */
   get joinedAt() {