diff --git a/src/client/websocket/packets/handlers/Ready.js b/src/client/websocket/packets/handlers/Ready.js
index 8c2492abf..7fea48c8d 100644
--- a/src/client/websocket/packets/handlers/Ready.js
+++ b/src/client/websocket/packets/handlers/Ready.js
@@ -17,7 +17,7 @@ class ReadyHandler extends AbstractHandler {
     client.readyAt = new Date();
     client.users.set(clientUser.id, clientUser);
 
-    for (const guild of data.guilds) client.dataManager.newGuild(guild);
+    for (const guild of data.guilds) if (!client.guilds.has(guild.id)) client.dataManager.newGuild(guild);
     for (const privateDM of data.private_channels) client.dataManager.newChannel(privateDM);
 
     for (const relation of data.relationships) {