diff --git a/src/structures/Guild.js b/src/structures/Guild.js
index d8dae531f..7c7fcd4a9 100644
--- a/src/structures/Guild.js
+++ b/src/structures/Guild.js
@@ -679,6 +679,7 @@ class Guild {
   }
 
   _addMember(guildUser, emitEvent = true) {
+    const existing = this.members.has(guildUser.user.id);
     if (!(guildUser.user instanceof User)) guildUser.user = this.client.dataManager.newUser(guildUser.user);
 
     guildUser.joined_at = guildUser.joined_at || 0;
@@ -702,7 +703,7 @@ class Guild {
      * @param {Guild} guild The guild that the user has joined
      * @param {GuildMember} member The member that has joined
      */
-    if (this.client.ws.status === Constants.Status.READY && emitEvent) {
+    if (this.client.ws.status === Constants.Status.READY && emitEvent && !existing) {
       this.client.emit(Constants.Events.GUILD_MEMBER_ADD, this, member);
     }
 
diff --git a/src/structures/GuildChannel.js b/src/structures/GuildChannel.js
index de1cd2726..7d220cf6c 100644
--- a/src/structures/GuildChannel.js
+++ b/src/structures/GuildChannel.js
@@ -144,8 +144,8 @@ class GuildChannel extends Channel {
     const prevOverwrite = this.permissionOverwrites.get(userOrRole.id);
 
     if (prevOverwrite) {
-      payload.allow = prevOverwrite.allow;
-      payload.deny = prevOverwrite.deny;
+      payload.allow = prevOverwrite.allowData;
+      payload.deny = prevOverwrite.denyData;
     }
 
     for (const perm in options) {
diff --git a/test/random.js b/test/random.js
index 9fceaf172..32adab2d8 100644
--- a/test/random.js
+++ b/test/random.js
@@ -20,6 +20,8 @@ client.on('userUpdate', (o, n) => {
   console.log(o.username, n.username);
 });
 
+client.on('guildMemberAdd', (g, m) => console.log(`${m.user.username} joined ${g.name}`));
+
 client.on('channelCreate', channel => {
   console.log(`made ${channel.name}`);
 });