diff --git a/src/client/web/src/components/__test__/pane_login.test.tsx b/src/client/web/src/components/__test__/pane_login.test.tsx
index 7a15d26..0ae815a 100644
--- a/src/client/web/src/components/__test__/pane_login.test.tsx
+++ b/src/client/web/src/components/__test__/pane_login.test.tsx
@@ -72,7 +72,9 @@ describe("Login", () => {
       userName: "mockUser",
       userRole: "admin",
       authed: true,
-      usedSpace: "256",
+      extInfo: {
+        usedSpace: "256",
+      },
       quota: {
         spaceLimit: "7",
         uploadSpeedLimit: 3,
diff --git a/src/client/web/src/components/__test__/state_mgr.test.tsx b/src/client/web/src/components/__test__/state_mgr.test.tsx
index bc2d65e..1e16ed6 100644
--- a/src/client/web/src/components/__test__/state_mgr.test.tsx
+++ b/src/client/web/src/components/__test__/state_mgr.test.tsx
@@ -1,5 +1,4 @@
 import { List, Set, Map } from "immutable";
-import { mock, instance } from "ts-mockito";
 
 import { initMockWorker } from "../../test/helpers";
 import { StateMgr } from "../state_mgr";
@@ -72,7 +71,9 @@ describe("State Manager", () => {
       userID: "0",
       userName: "mockUser",
       userRole: "admin",
-      usedSpace: "256",
+      extInfo: {
+        usedSpace: "256",
+      },
       quota: {
         spaceLimit: "7",
         uploadSpeedLimit: 3,
@@ -189,7 +190,9 @@ describe("State Manager", () => {
       userName: mockSelfResp.data.name,
       userRole: mockSelfResp.data.role,
       quota: mockSelfResp.data.quota,
-      usedSpace: mockSelfResp.data.usedSpace,
+      extInfo: {
+        usedSpace: mockSelfResp.data.usedSpace,
+      },
       authed: false,
       captchaID: "mockCaptchaID",
       preferences: {
diff --git a/src/client/web/src/components/__test__/topbar.test.tsx b/src/client/web/src/components/__test__/topbar.test.tsx
index 3ba5754..2b54b80 100644
--- a/src/client/web/src/components/__test__/topbar.test.tsx
+++ b/src/client/web/src/components/__test__/topbar.test.tsx
@@ -101,7 +101,9 @@ describe("TopBar", () => {
       userID: visitorID,
       userName: "visitor",
       userRole: roleVisitor,
-      usedSpace: "0",
+      extInfo: {
+        usedSpace: "0",
+      },
       quota: {
         spaceLimit: "0",
         uploadSpeedLimit: 0,
diff --git a/src/client/web/src/components/core_state.ts b/src/client/web/src/components/core_state.ts
index 8e907e8..75c1574 100644
--- a/src/client/web/src/components/core_state.ts
+++ b/src/client/web/src/components/core_state.ts
@@ -74,7 +74,9 @@ export function initState(): ICoreState {
       userID: "",
       userName: "",
       userRole: "",
-      usedSpace: "0",
+      extInfo: {
+        usedSpace: "0",
+      },
       quota: {
         spaceLimit: "0",
         uploadSpeedLimit: 0,
diff --git a/src/client/web/src/components/pane_login.tsx b/src/client/web/src/components/pane_login.tsx
index 248bd6b..7301443 100644
--- a/src/client/web/src/components/pane_login.tsx
+++ b/src/client/web/src/components/pane_login.tsx
@@ -8,14 +8,17 @@ import { alertMsg } from "../common/env";
 import { Quota, Preferences } from "../client";
 import { getErrMsg } from "../common/utils";
 
+export interface ExtInfo {
+  usedSpace: string;
+}
 export interface LoginProps {
+  authed: boolean;
+  captchaID: string;
   userID: string;
   userName: string;
   userRole: string;
-  usedSpace: string;
+  extInfo: ExtInfo;
   quota: Quota;
-  authed: boolean;
-  captchaID: string;
   preferences: Preferences;
 }
 
diff --git a/src/client/web/src/components/panel_files.tsx b/src/client/web/src/components/panel_files.tsx
index f2695bd..d0a2760 100644
--- a/src/client/web/src/components/panel_files.tsx
+++ b/src/client/web/src/components/panel_files.tsx
@@ -796,7 +796,7 @@ export class FilesPanel extends React.Component<Props, State, {}> {
         this.prepareTable(this.props.filesInfo.items, showOp)
       );
 
-    const usedSpace = FileSize(parseInt(this.props.login.usedSpace, 10), {
+    const usedSpace = FileSize(parseInt(this.props.login.extInfo.usedSpace, 10), {
       round: 0,
     });
     const spaceLimit = FileSize(
diff --git a/src/client/web/src/components/state_updater.ts b/src/client/web/src/components/state_updater.ts
index 7974749..5503933 100644
--- a/src/client/web/src/components/state_updater.ts
+++ b/src/client/web/src/components/state_updater.ts
@@ -458,7 +458,9 @@ export class Updater {
     return "";
   };
 
-  getParamMap = async (params: URLSearchParams): Promise<Map<string, string>> => {
+  getParamMap = async (
+    params: URLSearchParams
+  ): Promise<Map<string, string>> => {
     let paramMap = Map<string, string>();
     paramMap = paramMap.set("sh", "");
     paramMap = paramMap.set("dir", "");
@@ -466,7 +468,7 @@ export class Updater {
     let shareID = params.get("sh");
     if (shareID != null && shareID !== "") {
       paramMap = paramMap.set("sh", shareID);
-      const resp = await this.filesClient.getSharingDir(shareID)
+      const resp = await this.filesClient.getSharingDir(shareID);
       if (resp.status === 200) {
         paramMap = paramMap.set("dir", resp.data.sharingDir);
       }
@@ -478,7 +480,7 @@ export class Updater {
   };
 
   initCwd = async (params: URLSearchParams): Promise<string> => {
-    const paramMap = await this.getParamMap(params)
+    const paramMap = await this.getParamMap(params);
     const dir = paramMap.get("dir", "");
 
     if (dir != null && dir !== "") {
@@ -551,7 +553,7 @@ export class Updater {
     this.props.login.userID = visitorID;
     this.props.login.userName = "visitor";
     this.props.login.userRole = roleVisitor;
-    this.props.login.usedSpace = "0";
+    this.props.login.extInfo.usedSpace = "0";
     this.props.login.quota = {
       uploadSpeedLimit: 0,
       downloadSpeedLimit: 0,
@@ -579,7 +581,7 @@ export class Updater {
       this.props.login.userID = resp.data.id;
       this.props.login.userName = resp.data.name;
       this.props.login.userRole = resp.data.role;
-      this.props.login.usedSpace = resp.data.usedSpace;
+      this.props.login.extInfo.usedSpace = resp.data.usedSpace;
       this.props.login.quota = resp.data.quota;
       this.props.login.preferences = resp.data.preferences;
       return "";
diff --git a/src/client/web/src/components/topbar.tsx b/src/client/web/src/components/topbar.tsx
index ef59d21..f8f8619 100644
--- a/src/client/web/src/components/topbar.tsx
+++ b/src/client/web/src/components/topbar.tsx
@@ -1,7 +1,7 @@
 import * as React from "react";
 import { List } from "immutable";
-import { alertMsg, confirmMsg } from "../common/env";
 
+import { alertMsg, confirmMsg } from "../common/env";
 import { ICoreState, MsgProps, UIProps } from "./core_state";
 import { LoginProps } from "./pane_login";
 import { updater } from "./state_updater";