diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 1c4b617..47e05f3 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -4,7 +4,7 @@
           android:versionCode="1"
           android:versionName="1.0">
 
-  <uses-sdk android:minSdkVersion="9" />
+  <uses-sdk android:minSdkVersion="23" />
   <uses-feature android:glEsVersion="0x00020000" android:required="true" />
 
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="18" />
diff --git a/jni/Application.mk b/jni/Application.mk
index 650082a..b1527c7 100644
--- a/jni/Application.mk
+++ b/jni/Application.mk
@@ -1,7 +1,7 @@
 # https://developer.android.com/ndk/guides/application_mk.html
 
 NDK_TOOLCHAIN_VERSION := clang
-APP_PLATFORM := android-10
+APP_PLATFORM := android-23
 APP_OPTIM := release
 APP_ABI := armeabi-v7a # arm64-v8a x86
 
diff --git a/jni/main.c b/jni/main.c
index 4af74a5..bf3a105 100644
--- a/jni/main.c
+++ b/jni/main.c
@@ -7,6 +7,8 @@
 #include <android/asset_manager.h>
 #include <android_native_app_glue.h>
 
+#include <string.h>
+
 #define LOG(...) ((void)__android_log_print(ANDROID_LOG_INFO, "NativeExample", __VA_ARGS__))
 
 struct engine
@@ -243,8 +245,6 @@ static void engine_handle_cmd(struct android_app* app, int32_t cmd)
 
 void android_main(struct android_app* state)
 {
-    app_dummy();
-
     struct engine engine;
     memset(&engine, 0, sizeof(engine));