diff --git a/mobile/build.gradle b/mobile/build.gradle
index b269da53..f04593e7 100644
--- a/mobile/build.gradle
+++ b/mobile/build.gradle
@@ -19,8 +19,8 @@ android {
         minSdkVersion 21
         targetSdkVersion 29
         resConfigs "ru", "zh-rCN"
-        versionCode 209
-        versionName '2.5.2'
+        versionCode 210
+        versionName '2.5.3'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         javaCompileOptions {
             annotationProcessorOptions {
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/util/Utils.kt b/mobile/src/main/java/be/mygod/vpnhotspot/util/Utils.kt
index fa9df854..c42c9155 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/util/Utils.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/util/Utils.kt
@@ -19,7 +19,6 @@ import androidx.databinding.BindingAdapter
 import be.mygod.vpnhotspot.App.Companion.app
 import be.mygod.vpnhotspot.room.macToString
 import be.mygod.vpnhotspot.widget.SmartSnackbar
-import java.lang.IllegalArgumentException
 import java.net.InetAddress
 import java.net.NetworkInterface
 import java.net.SocketException