diff --git a/src/structures/GuildMember.js b/src/structures/GuildMember.js
index 0c085d4be78b..584594066ec2 100644
--- a/src/structures/GuildMember.js
+++ b/src/structures/GuildMember.js
@@ -95,7 +95,7 @@ class GuildMember extends Base {
    * @readonly
    */
   get partial() {
-    return !this.joinedTimestamp;
+    return this.joinedTimestamp !== null;
   }
 
   /**