diff --git a/android-L-preview/AndroidManifest.xml b/android-L-preview/AndroidManifest.xml
index 08eafe5f..5147abf9 100644
--- a/android-L-preview/AndroidManifest.xml
+++ b/android-L-preview/AndroidManifest.xml
@@ -9,7 +9,7 @@
         android:targetSdkVersion="21" />
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
diff --git a/android-camera-app/AndroidManifest.xml b/android-camera-app/AndroidManifest.xml
index ff315e62..694b828b 100644
--- a/android-camera-app/AndroidManifest.xml
+++ b/android-camera-app/AndroidManifest.xml
@@ -6,7 +6,7 @@
 
     <uses-sdk
         android:minSdkVersion="8"
-        android:targetSdkVersion="17" />
+        android:targetSdkVersion="21" />
 
     <uses-feature android:name="android.hardware.camera" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
diff --git a/readme.md b/readme.md
index c47eb01f..766d7163 100644
--- a/readme.md
+++ b/readme.md
@@ -1,5 +1,5 @@
 Android Repository
 ==================
 
-
+Android Repository try to complete issues.
 This repository contains complete code for Android blog posts on [hmkcode.com](http://hmkcode.com)