diff --git a/app/src/main/cpp/native-lib.c b/app/src/main/cpp/native-lib.c
index 21bb870..a903e75 100644
--- a/app/src/main/cpp/native-lib.c
+++ b/app/src/main/cpp/native-lib.c
@@ -23,16 +23,15 @@ extern int get_default_ttl();
 
 extern int get_addr(const char *str, struct sockaddr_ina *addr);
 
-JNIEXPORT jint JNICALL
-Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_00024Companion_jniInit(JNIEnv *env, jobject thiz) {
+JNIEXPORT jint JNI_OnLoad(JavaVM *vm, __attribute__((unused)) void *reserved) {
     oob_data.data = NULL;
-    return 0;
+    return JNI_VERSION_1_6;
 }
 
 JNIEXPORT jint JNICALL
 Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniCreateSocket(
         JNIEnv *env,
-        jobject thiz,
+        __attribute__((unused)) jobject thiz,
         jstring ip,
         jint port,
         jint max_connections,
@@ -128,8 +127,10 @@ Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniCreateSocket(
 }
 
 JNIEXPORT jint JNICALL
-Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniStartProxy(JNIEnv *env, jobject thiz,
-                                                                     jint fd) {
+Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniStartProxy(
+        __attribute__((unused)) JNIEnv *env,
+        __attribute__((unused)) jobject thiz,
+        jint fd) {
     LOG(LOG_S, "start_proxy, fd: %d", fd);
     NOT_EXIT = 1;
     if (event_loop(fd) < 0) {
@@ -139,8 +140,10 @@ Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniStartProxy(JNIEnv *env
 }
 
 JNIEXPORT jint JNICALL
-Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniStopProxy(JNIEnv *env, jobject thiz,
-                                                                    jint fd) {
+Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniStopProxy(
+        __attribute__((unused)) JNIEnv *env,
+        __attribute__((unused)) jobject thiz,
+        jint fd) {
     LOG(LOG_S, "stop_proxy, fd: %d", fd);
     if (shutdown(fd, SHUT_RDWR) < 0) {
         return get_e();
diff --git a/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxy.kt b/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxy.kt
index b85ef25..5626423 100644
--- a/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxy.kt
+++ b/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxy.kt
@@ -8,10 +8,7 @@ class ByeDpiProxy {
     companion object {
         init {
             System.loadLibrary("byedpi")
-            jniInit()
         }
-
-        private external fun jniInit(): Int
     }
 
     private val mutex = Mutex()
diff --git a/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxyPreferences.kt b/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxyPreferences.kt
index cb33049..ae489e7 100644
--- a/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxyPreferences.kt
+++ b/app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxyPreferences.kt
@@ -34,7 +34,7 @@ class ByeDpiProxyPreferences(
     val splitPosition: Int = splitPosition ?: 3
     val splitAtHost: Boolean = splitAtHost ?: false
     val fakeTtl: Int = fakeTtl ?: 8
-    val fakeSni: String = fakeSni ?: "www.w3c.org"
+    val fakeSni: String = fakeSni ?: "www.iana.org"
     val oobData: String = oobData ?: "a"
     val hostMixedCase: Boolean = hostMixedCase ?: false
     val domainMixedCase: Boolean = domainMixedCase ?: false
diff --git a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiProxyService.kt b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiProxyService.kt
index cb0f39d..e3b4799 100644
--- a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiProxyService.kt
+++ b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiProxyService.kt
@@ -40,7 +40,6 @@ class ByeDpiProxyService : LifecycleService() {
         private const val FOREGROUND_SERVICE_ID: Int = 2
         private const val NOTIFICATION_CHANNEL_ID: String = "ByeDPI Proxy"
 
-        @Volatile
         private var status: ServiceStatus = ServiceStatus.Disconnected
     }
 
diff --git a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiStatus.kt b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiStatus.kt
index fb425c5..64e29e2 100644
--- a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiStatus.kt
+++ b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiStatus.kt
@@ -3,11 +3,9 @@ package io.github.dovecoteescapee.byedpi.services
 import io.github.dovecoteescapee.byedpi.data.AppStatus
 import io.github.dovecoteescapee.byedpi.data.Mode
 
-@Volatile
 var appStatus = AppStatus.Halted to Mode.VPN
     private set
 
 fun setStatus(status: AppStatus, mode: Mode) {
     appStatus = status to mode
-
 }
diff --git a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiVpnService.kt b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiVpnService.kt
index 32af5de..3832f98 100644
--- a/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiVpnService.kt
+++ b/app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiVpnService.kt
@@ -47,7 +47,6 @@ class ByeDpiVpnService : LifecycleVpnService() {
         private const val FOREGROUND_SERVICE_ID: Int = 1
         private const val NOTIFICATION_CHANNEL_ID: String = "ByeDPIVpn"
 
-        @Volatile
         private var status: ServiceStatus = ServiceStatus.Disconnected
     }
 
diff --git a/app/src/main/res/xml/settings.xml b/app/src/main/res/xml/settings.xml
index f3fc482..702b21d 100644
--- a/app/src/main/res/xml/settings.xml
+++ b/app/src/main/res/xml/settings.xml
@@ -118,7 +118,7 @@
         <com.takisoft.preferencex.EditTextPreference
             android:key="byedpi_fake_sni"
             android:title="SNI of fake packet"
-            android:defaultValue="www.w3c.org"
+            android:defaultValue="www.iana.org"
             app:useSimpleSummaryProvider="true" />
 
         <com.takisoft.preferencex.EditTextPreference