diff --git a/packages/discord.js/src/structures/GuildMember.js b/packages/discord.js/src/structures/GuildMember.js
index 7c2aec177895..3e71824f3f12 100644
--- a/packages/discord.js/src/structures/GuildMember.js
+++ b/packages/discord.js/src/structures/GuildMember.js
@@ -56,10 +56,12 @@ class GuildMember extends Base {
 
     /**
      * The role ids of the member
+     * @name GuildMember#_roles
      * @type {Snowflake[]}
      * @private
      */
-    this._roles = [];
+    Object.defineProperty(this, '_roles', { value: [], writable: true });
+
     if (data) this._patch(data);
   }