diff --git a/src/main/res/values-ru/strings.xml b/src/main/res/values-ru/strings.xml
index d81e3d0a..05ccf465 100644
--- a/src/main/res/values-ru/strings.xml
+++ b/src/main/res/values-ru/strings.xml
@@ -117,6 +117,7 @@
   <string name="add_profile_methods_manual_settings">Настройка вручную</string>
   <string name="add_profile_nfc_hint_title">Использовать Android Beam (NFC) для добавления профиля</string>
   <string name="add_profile_nfc_hint">Оставьте экран включённым на обоих устройствах, на втором устойстве нажмите кнопку профиля "поделиться", поднисите устройства друг к другу (тыльными сторонами).\nТак же Вы можете сканировать nfc метку.</string>
+  <string name="add_profile_scanner_permission_required">Разрешение камеры требуется для сканирования QR код.</string>
   <string name="copy_url">Копировать URL</string>
   <plurals name="removed">
     <item quantity="one">Удалён</item>
diff --git a/src/main/res/values-zh-rCN/strings.xml b/src/main/res/values-zh-rCN/strings.xml
index 9a8be00d..9c1c6241 100644
--- a/src/main/res/values-zh-rCN/strings.xml
+++ b/src/main/res/values-zh-rCN/strings.xml
@@ -101,6 +101,7 @@
   <string name="add_profile_methods_manual_settings">手动设置</string>
   <string name="add_profile_nfc_hint_title">使用 Android Beam (NFC) 来添加配置</string>
   <string name="add_profile_nfc_hint">保持两台设备的屏幕亮起，在另外一台设备上，点击配置文件的分享按钮，将它们靠在一起（背靠背）。\n你也可以扫描 NFC 标签。</string>
+  <string name="add_profile_scanner_permission_required">扫描二维码需要相机权限。</string>
 
   <string-array name="route_entry">
     <item>全局</item>
diff --git a/src/main/res/values-zh/strings.xml b/src/main/res/values-zh/strings.xml
index 6ad44866..9ccedc76 100644
--- a/src/main/res/values-zh/strings.xml
+++ b/src/main/res/values-zh/strings.xml
@@ -100,6 +100,10 @@
   <string name="add_profile_dialog">為 Shadowsocks 新增此設定檔？</string>
   <string name="add_profile_methods_scan_qr_code">掃描 QR 碼</string>
   <string name="add_profile_methods_manual_settings">手動設定</string>
+  <string name="add_profile_nfc_hint_title">使用 Android Beam (NFC) 來新增設定檔</string>
+  <string name="add_profile_nfc_hint">
+    保持兩台設備的屏幕亮起，在另外一台設備上，點擊設定檔的分享按鈕，將它們靠在一起（背靠背）。\n你也可以掃描 NFC 標籤。</string>
+  <string name="add_profile_scanner_permission_required">掃描 QR 碼需要相機權限。</string>
 
   <string-array name="route_entry">
     <item>全域</item>
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index ecd0ec71..c1d42c21 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -119,6 +119,7 @@
   <string name="add_profile_methods_manual_settings">Manual Settings</string>
   <string name="add_profile_nfc_hint_title">Use Android Beam (NFC) to add profile</string>
   <string name="add_profile_nfc_hint">Keep both devices screen on, on the other device, click profile\'s share button, bring them together (back to back).\nYou also can scan a nfc tag.</string>
+  <string name="add_profile_scanner_permission_required">Camera permission is required for scanning QR code.</string>
   <string name="copy_url">Copy URL</string>
   <plurals name="removed">
     <item quantity="one">Removed</item>
diff --git a/src/main/scala/com/github/shadowsocks/ScannerActivity.scala b/src/main/scala/com/github/shadowsocks/ScannerActivity.scala
index 3983e757..1bd55d1b 100644
--- a/src/main/scala/com/github/shadowsocks/ScannerActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/ScannerActivity.scala
@@ -15,6 +15,7 @@ import android.support.v7.widget.Toolbar
 import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 
 import com.google.zxing.Result
 
@@ -36,7 +37,10 @@ class ScannerActivity extends AppCompatActivity with ZXingScannerView.ResultHand
         && grantResults(0) == PackageManager.PERMISSION_GRANTED) {
           scannerView.setResultHandler(this)
           scannerView.startCamera()
-        }
+      } else {
+        Toast.makeText(this, R.string.add_profile_scanner_permission_required, Toast.LENGTH_SHORT).show()
+        finish()
+      }
     }
   }