diff --git a/android/AndroidManifest.xml b/android/AndroidManifest.xml
index 9784558..0e2ad94 100644
--- a/android/AndroidManifest.xml
+++ b/android/AndroidManifest.xml
@@ -32,8 +32,7 @@
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
-        android:theme="@style/AppTheme" 
-        android:debuggable="true">
+        android:theme="@style/AppTheme" >
         <activity
             android:name="com.example.travelguide.ArticleInfoListActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"
diff --git a/android/jni/Application.mk b/android/jni/Application.mk
index 4421a79..38c4338 100644
--- a/android/jni/Application.mk
+++ b/android/jni/Application.mk
@@ -1,8 +1,6 @@
 APP_STL := gnustl_static
 APP_PLATFORM := android-9
 APP_ABI := all
-# remove in release
-APP_OPTIM := debug
 
 LOCAL_PATH := $(call my-dir)
 APP_CFLAGS += -I$(LOCAL_PATH)/../../3rdparty/boost