diff --git a/src/background.ts b/src/background.ts
index 7d5b1203..04ff598f 100644
--- a/src/background.ts
+++ b/src/background.ts
@@ -12,7 +12,6 @@ import ContextMenu from 'electron-context-menu'
 
 import Application from './main/Application'
 import ApplicationMenu from './main/ApplicationMenu'
-import Timeline from './main/Timeline'
 
 export type PackageJson = typeof import('../package.json')
 import { author, contributors, homepage } from '../package.json'
@@ -46,8 +45,6 @@ if (process.env.NODE_ENV !== 'production') {
 protocol.registerStandardSchemes(['app'], { secure: true })
 
 ContextMenu()
-//この書き方がいいのかは知りません。(cutls|main/Timeline.ts)
-Timeline.timelineReady()
 
 const TheDeskVueApp: Application = Application.shared
 TheDeskVueApp.setApplicationMenu(ApplicationMenu.buildTemplate())
\ No newline at end of file
diff --git a/src/components/AddColumn/PublicTimeline.vue b/src/components/AddColumn/PublicTimeline.vue
index fc920bd7..5aef79db 100644
--- a/src/components/AddColumn/PublicTimeline.vue
+++ b/src/components/AddColumn/PublicTimeline.vue
@@ -5,7 +5,8 @@
       <BaseButton
         @click.native="addTL"
         class="primary fill"
-        style="font-size:.8em;"
+        style="--font-size:.8em;"
+        :disabled="!hasDomain"
       >Add Column</BaseButton>
     </div>
     <div id="timelines">
@@ -14,11 +15,11 @@
       </div>
     </div>
     <BaseButton
-        v-if="!showInput"
-        @click.native="showInput = true"
-        class="primary fill"
-        style="font-size:.8em;"
-      >Show Menu</BaseButton>
+      v-if="!showInput"
+      @click.native="showInput = true"
+      class="primary fill"
+      style="--font-size:.8em;"
+    >Show Menu</BaseButton>
   </div>
 </template>
 
@@ -26,16 +27,18 @@
 import { ipcRenderer } from 'electron'
 import { Component, Vue } from 'vue-property-decorator'
 
-type Status = 'welcome' | 'login' | 'public_timeline'
-type Instance = String
+type Instance = string
 type showInput = boolean
-type Timelines = String[]
+type Timelines = string[]
 @Component
 export default class AddColumn extends Vue {
-  public status: Status = 'welcome'
   public instance: Instance = ''
-  public showInput : showInput = true
-  public pubTL : Timelines = []
+  public showInput: showInput = true
+  public pubTL: Timelines = []
+
+  public get hasDomain() {
+    return this.instance != ''
+  }
 
   public addTL() {
     this.showInput = false
@@ -43,9 +46,9 @@ export default class AddColumn extends Vue {
     this.timeline()
   }
 
-  public timeline(){
-    this.pubTL.forEach(function( value ) {
-     ipcRenderer.send('no-auth-streaming', value);
+  public timeline() {
+    this.pubTL.forEach(function (value) {
+      ipcRenderer.send('no-auth-streaming', value);
     });
   }
 }
diff --git a/src/main/Application.ts b/src/main/Application.ts
index 615aa41b..333ede61 100644
--- a/src/main/Application.ts
+++ b/src/main/Application.ts
@@ -9,13 +9,14 @@ import {
 } from 'vue-cli-plugin-electron-builder/lib'
 
 import Window from './Window'
+import Timeline from './Timeline'
 
 const isDevelopment = process.env.NODE_ENV !== 'production'
 
 export default class Application {
     private static _instance: Application
 
-    public static get shared() {
+    public static get shared(): Application {
         // Do you need arguments? Make it a regular static method instead.
         return this._instance || (this._instance = new this())
     }
@@ -46,6 +47,9 @@ export default class Application {
             }
         }
         if (!process.env.WEBPACK_DEV_SERVER_URL) createProtocol('app')
+
+        Timeline.ready()
+
         Window.Main()
     }
 
diff --git a/src/main/Timeline.ts b/src/main/Timeline.ts
index 1f5da407..fc991b59 100644
--- a/src/main/Timeline.ts
+++ b/src/main/Timeline.ts
@@ -1,20 +1,20 @@
 import {
-  ipcMain
+    ipcMain
 } from 'electron'
 import Mastodon, { Status, Response } from 'megalodon'
-//この書き方がいいのかは知りません。(cutls|background.ts)
+
 export default class Timeline {
-    static timelineReady() {
-      ipcMain.on('no-auth-streaming', (event: Event, instance :String) => {
-        const client = new Mastodon(
-          "",
-          "https://"+instance + '/api/v1'
-        )
-        
-        client.get<[Status]>('/timelines/public?local=true')
-          .then((resp: Response<[Status]>) => {
-            console.log(resp.data)
-          })
-      })
+    public static ready() {
+        ipcMain.on('no-auth-streaming', (event: Event, instance: string) => {
+            const client = new Mastodon(
+                '',
+                'https://' + instance + '/api/v1'
+            )
+
+            client.get<[Status]>('/timelines/public?local=true')
+                .then((resp: Response<[Status]>) => {
+                    console.log(resp.data)
+                })
+        })
     }
 }
\ No newline at end of file