diff --git a/components/ChatView/MessageTextarea.tsx b/components/ChatView/MessageTextarea.tsx
index ceeb5c0..48bb112 100644
--- a/components/ChatView/MessageTextarea.tsx
+++ b/components/ChatView/MessageTextarea.tsx
@@ -1,7 +1,7 @@
 import { useEffect, useRef, useState } from "react";
 import { toast } from "react-hot-toast";
 import TextareaAutosize from "react-textarea-autosize";
-import { localUser, useChatStore, useMessageStore } from "@/store";
+import { useChatStore, useMessageStore, useUserStore } from "@/store";
 import { CreatorRole } from "@/types";
 import { generateUUID } from "@/utils";
 import Icon from "../Icon";
@@ -13,6 +13,7 @@ interface Props {
 
 const MessageTextarea = (props: Props) => {
   const { disabled, sendMessage } = props;
+  const userStore = useUserStore();
   const chatStore = useChatStore();
   const messageStore = useMessageStore();
   const [value, setValue] = useState<string>("");
@@ -45,7 +46,7 @@ const MessageTextarea = (props: Props) => {
     messageStore.addMessage({
       id: generateUUID(),
       chatId: chatStore.currentChat.id,
-      creatorId: localUser.id,
+      creatorId: userStore.currentUser.id,
       creatorRole: CreatorRole.User,
       createdAt: Date.now(),
       content: value,
diff --git a/components/ChatView/MessageView.tsx b/components/ChatView/MessageView.tsx
index afcbddf..7c59664 100644
--- a/components/ChatView/MessageView.tsx
+++ b/components/ChatView/MessageView.tsx
@@ -1,5 +1,5 @@
 import { marked } from "marked";
-import { localUser } from "@/store";
+import { useUserStore } from "@/store";
 import { Message } from "@/types";
 
 interface Props {
@@ -8,7 +8,8 @@ interface Props {
 
 const MessageView = (props: Props) => {
   const message = props.message;
-  const isCurrentUser = message.creatorId === localUser.id;
+  const userStore = useUserStore();
+  const isCurrentUser = message.creatorId === userStore.currentUser.id;
 
   return (
     <div className={`w-full flex flex-row justify-start items-start my-4 ${isCurrentUser ? "justify-end pl-8 sm:pl-24" : "pr-8 sm:pr-24"}`}>
diff --git a/components/ChatView/index.tsx b/components/ChatView/index.tsx
index 6d26bfe..df3c4f3 100644
--- a/components/ChatView/index.tsx
+++ b/components/ChatView/index.tsx
@@ -1,7 +1,7 @@
 import axios from "axios";
 import { useEffect, useRef, useState } from "react";
-import { defaultChat, getAssistantById, getPromptOfAssistant, localUser, useChatStore, useMessageStore } from "@/store";
-import { Chat, CreatorRole, Message } from "@/types";
+import { getAssistantById, getPromptOfAssistant, useChatStore, useMessageStore } from "@/store";
+import { CreatorRole } from "@/types";
 import { generateUUID } from "@/utils";
 import Icon from "../Icon";
 import Header from "./Header";
@@ -11,21 +11,10 @@ import MessageTextarea from "./MessageTextarea";
 const ChatView = () => {
   const chatStore = useChatStore();
   const messageStore = useMessageStore();
-  const [messageList, setMessageList] = useState<Message[]>([]);
-  const [currentChat, setCurrentChat] = useState<Chat | null>(null);
   const [isRequesting, setIsRequesting] = useState<boolean>(false);
   const chatViewRef = useRef<HTMLDivElement>(null);
-
-  useEffect(() => {
-    if (!getAssistantById(chatStore.currentChat.assistantId)) {
-      chatStore.setCurrentChat(defaultChat);
-    }
-    setCurrentChat(chatStore.currentChat);
-  }, [chatStore]);
-
-  useEffect(() => {
-    setMessageList(messageStore.messageList.filter((message) => message.chatId === currentChat?.id));
-  }, [currentChat?.id, messageStore.messageList]);
+  const currentChat = chatStore.currentChat;
+  const messageList = messageStore.messageList.filter((message) => message.chatId === currentChat?.id);
 
   useEffect(() => {
     setTimeout(() => {
@@ -54,7 +43,7 @@ const ChatView = () => {
           content: prompt,
         },
         ...messageList.map((message) => ({
-          role: message.creatorId === localUser.id ? CreatorRole.User : CreatorRole.Assistant,
+          role: message.creatorRole,
           content: message.content,
         })),
       ],
diff --git a/pages/index.tsx b/pages/index.tsx
index b9308b1..2543ac4 100644
--- a/pages/index.tsx
+++ b/pages/index.tsx
@@ -1,7 +1,13 @@
 import { NextPage } from "next";
 import Head from "next/head";
 import React from "react";
-import ChatView from "@/components/ChatView";
+import dynamic from "next/dynamic";
+
+// Use dynamic import to avoid page hydrated.
+// reference: https://github.com/pmndrs/zustand/issues/1145#issuecomment-1316431268
+const ChatView = dynamic(() => import("@/components/ChatView"), {
+  ssr: false,
+});
 
 const ChatPage: NextPage = () => {
   return (
diff --git a/store/user.ts b/store/user.ts
index e410c90..2cc3198 100644
--- a/store/user.ts
+++ b/store/user.ts
@@ -1,8 +1,17 @@
 import { User } from "@/types";
+import { create } from "zustand";
 
-export const localUser: User = {
+const localUser: User = {
   id: "local-user",
   name: "Local user",
   description: "",
   avatar: "",
 };
+
+interface UserState {
+  currentUser: User;
+}
+
+export const useUserStore = create<UserState>()(() => ({
+  currentUser: localUser,
+}));