diff --git a/src/structures/PartialGroupDMChannel.js b/src/structures/PartialGroupDMChannel.js
index babd470..45bbff2 100644
--- a/src/structures/PartialGroupDMChannel.js
+++ b/src/structures/PartialGroupDMChannel.js
@@ -154,13 +154,14 @@ class PartialGroupDMChannel extends Channel {
    * @returns {Promise<PartialGroupDMChannel>}
    */
   async addMember(user) {
-    user = this.client.users.resolveId(user);
-    if (!user) {
+    const userId = this.client.users.resolveId(user);
+    user = this.client.users.resolve(userId);
+    if (!userId) {
       return Promise.reject(new TypeError('User is not a User or User ID'));
     }
-    if (this.recipients.get(user)) return Promise.reject(new Error('USER_ALREADY_IN_GROUP_DM_CHANNEL')); // Fails sometimes if member leaves recently (ex. user leave msg's channel used for adding)
-    await this.client.api.channels[this.id].recipients[user].put();
-    this._recipients = this._recipients.filter(r => r.id !== user);
+    if (this.recipients.get(userId)) return Promise.reject(new Error('USER_ALREADY_IN_GROUP_DM_CHANNEL')); // Fails sometimes if member leaves recently (ex. user leave msg's channel used for adding)
+    await this.client.api.channels[this.id].recipients[userId].put();
+    this._recipients.push(user);
     return this;
   }