diff --git a/browser/main/StatusBar/index.js b/browser/main/StatusBar/index.js
index 2106a230..49c1b40c 100644
--- a/browser/main/StatusBar/index.js
+++ b/browser/main/StatusBar/index.js
@@ -63,7 +63,7 @@ class StatusBar extends React.Component {
         {status.updateReady
           ? <button onClick={this.updateApp} styleName='update'>
             <i styleName='update-icon' className='fa fa-cloud-download' /> Ready to Update!
-            </button>
+          </button>
           : null
         }
       </div>
diff --git a/browser/main/modals/PreferencesModal/HotkeyTab.js b/browser/main/modals/PreferencesModal/HotkeyTab.js
index cfd45d96..586faf04 100644
--- a/browser/main/modals/PreferencesModal/HotkeyTab.js
+++ b/browser/main/modals/PreferencesModal/HotkeyTab.js
@@ -79,9 +79,9 @@ class HotkeyTab extends React.Component {
       this.props.haveToSave(null)
     } else {
       this.props.haveToSave({
-       tab: "Hotkey",
-       type: 'warning',
-       message: 'You have to save!'
+        tab: 'Hotkey',
+        type: 'warning',
+        message: 'You have to save!'
       })
     }
   }
diff --git a/browser/main/modals/PreferencesModal/UiTab.js b/browser/main/modals/PreferencesModal/UiTab.js
index 79314608..dcb9f6bc 100644
--- a/browser/main/modals/PreferencesModal/UiTab.js
+++ b/browser/main/modals/PreferencesModal/UiTab.js
@@ -38,16 +38,12 @@ class UiTab extends React.Component {
         message: err.message != null ? err.message : 'Error occurs!'
       }})
     }
-    if (JSON.parse(localStorage.getItem('config'))) {
-      const {ui, editor, preview} = JSON.parse(localStorage.getItem('config'))
-      this.currentConfig = {ui, editor, preview}
-    }
     ipc.addListener('APP_SETTING_DONE', this.handleSettingDone)
     ipc.addListener('APP_SETTING_ERROR', this.handleSettingError)
   }
 
   componentWillMount () {
-   CodeMirror.autoLoadMode(ReactCodeMirror, 'javascript')
+    CodeMirror.autoLoadMode(ReactCodeMirror, 'javascript')
   }
 
   componentWillUnmount () {
@@ -96,18 +92,20 @@ class UiTab extends React.Component {
     if (newCodemirrorTheme !== codemirrorTheme) {
       checkHighLight.setAttribute('href', `../node_modules/codemirror/theme/${newCodemirrorTheme.split(' ')[0]}.css`)
     }
-
-    this.setState({ config: newConfig, codemirrorTheme: newCodemirrorTheme }, 
-      () => {
+    this.setState({ config: newConfig, codemirrorTheme: newCodemirrorTheme }, () => {
+      if (JSON.parse(localStorage.getItem('config'))) {
+        const {ui, editor, preview} = JSON.parse(localStorage.getItem('config'))
+        this.currentConfig = {ui, editor, preview}
         if (JSON.stringify(this.currentConfig) === JSON.stringify(this.state.config)) {
           this.props.haveToSave(null)
         } else {
           this.props.haveToSave({
-            tab: "UI",
+            tab: 'UI',
             type: 'warning',
             message: 'You have to save!'
           })
         }
+      }
     })
   }
 
diff --git a/browser/main/modals/PreferencesModal/index.js b/browser/main/modals/PreferencesModal/index.js
index f478f913..adf1e0d4 100644
--- a/browser/main/modals/PreferencesModal/index.js
+++ b/browser/main/modals/PreferencesModal/index.js
@@ -111,7 +111,7 @@ class Preferences extends React.Component {
 
     const navButtons = tabs.map((tab) => {
       const isActive = this.state.currentTab === tab.target
-      const isOk = typeof tab[tab.label] !== "undefined" && tab[tab.label] !== null
+      const isOk = typeof tab[tab.label] !== 'undefined' && tab[tab.label] !== null
       return (
         <button styleName={isActive
             ? 'nav-button--active'
@@ -123,9 +123,7 @@ class Preferences extends React.Component {
           <span styleName='nav-button-label'>
             {tab.label}
           </span>
-          {isOk && tab.label === tab[tab.label].tab 
-            ? <p styleName={`saving--${tab[tab.label].type}`}>{tab[tab.label].message}</p> 
-            : null}
+          {isOk && tab.label === tab[tab.label].tab ? <p styleName={`saving--${tab[tab.label].type}`}>{tab[tab.label].message}</p> : null}
         </button>
       )
     })