diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServerStarter.java b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServerStarter.java
index 9dfe712f..3e31b828 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServerStarter.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServerStarter.java
@@ -69,10 +69,10 @@ public static void main(String[] args) throws Exception {
             throw new IOException(e);
         }
         {
-            LauncherTrustManager.CheckMode mode = (Version.RELEASE == Version.Type.LTS || Version.RELEASE == Version.Type.STABLE) ?
-                    (allowUnsigned ? LauncherTrustManager.CheckMode.WARN_IN_NOT_SIGNED : LauncherTrustManager.CheckMode.EXCEPTION_IN_NOT_SIGNED) :
-                    (allowUnsigned ? LauncherTrustManager.CheckMode.NONE_IN_NOT_SIGNED : LauncherTrustManager.CheckMode.WARN_IN_NOT_SIGNED);
-            certificateManager.checkClass(LaunchServer.class, mode);
+            //LauncherTrustManager.CheckMode mode = (Version.RELEASE == Version.Type.LTS || Version.RELEASE == Version.Type.STABLE) ?
+            //        (allowUnsigned ? LauncherTrustManager.CheckMode.WARN_IN_NOT_SIGNED : LauncherTrustManager.CheckMode.EXCEPTION_IN_NOT_SIGNED) :
+            //        (allowUnsigned ? LauncherTrustManager.CheckMode.NONE_IN_NOT_SIGNED : LauncherTrustManager.CheckMode.WARN_IN_NOT_SIGNED);
+            certificateManager.checkClass(LaunchServer.class, LauncherTrustManager.CheckMode.NONE_IN_NOT_SIGNED);
         }
 
         LaunchServerRuntimeConfig runtimeConfig;
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/asm/NodeUtils.java b/LaunchServer/src/main/java/pro/gravit/launchserver/asm/NodeUtils.java
index 1aabfbcf..ea8f00f1 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/asm/NodeUtils.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/asm/NodeUtils.java
@@ -5,6 +5,7 @@
 import org.objectweb.asm.Type;
 import org.objectweb.asm.tree.*;
 import pro.gravit.utils.helper.IOHelper;
+import pro.gravit.utils.helper.JVMHelper;
 import pro.gravit.utils.helper.JarHelper;
 
 import java.io.IOException;
@@ -16,17 +17,7 @@
 import static org.objectweb.asm.Opcodes.*;
 
 public final class NodeUtils {
-	public static final boolean JAVA9;
 
-	static {
-		boolean java9 = false;
-		try {
-			Class.forName("java.lang.StackWalker");
-			java9 = true;
-		} catch (final Throwable e) {
-		}
-		JAVA9 = java9;
-	}
     private NodeUtils() {
     }
 
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/ProguardConf.java b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/ProguardConf.java
index 9201cad4..7b3bf8fc 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/ProguardConf.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/ProguardConf.java
@@ -2,10 +2,7 @@
 
 import pro.gravit.launchserver.LaunchServer;
 import pro.gravit.launchserver.asm.NodeUtils;
-import pro.gravit.utils.helper.IOHelper;
-import pro.gravit.utils.helper.LogHelper;
-import pro.gravit.utils.helper.SecurityHelper;
-import pro.gravit.utils.helper.UnpackHelper;
+import pro.gravit.utils.helper.*;
 
 import java.io.IOException;
 import java.io.OutputStreamWriter;
@@ -61,7 +58,7 @@ public String[] buildConfig(Path inputJar, Path outputJar) {
         confStrs.add("-obfuscationdictionary \'" + words.toFile().getName() + "\'");
         confStrs.add("-injar \'" + inputJar.toAbsolutePath() + "\'");
         confStrs.add("-outjar \'" + outputJar.toAbsolutePath() + "\'");
-    	Collections.addAll(confStrs, NodeUtils.JAVA9 ? JAVA9_OPTS : JAVA8_OPTS);
+    	Collections.addAll(confStrs, JVMHelper.JVM_VERSION >= 9 ? JAVA9_OPTS : JAVA8_OPTS);
         srv.launcherBinary.coreLibs.stream()
                 .map(e -> "-libraryjars \'" + e.toAbsolutePath().toString() + "\'")
                 .forEach(confStrs::add);
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/modules/impl/LaunchServerModulesManager.java b/LaunchServer/src/main/java/pro/gravit/launchserver/modules/impl/LaunchServerModulesManager.java
index 409435e9..cdc61bd8 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/modules/impl/LaunchServerModulesManager.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/modules/impl/LaunchServerModulesManager.java
@@ -16,6 +16,7 @@ public class LaunchServerModulesManager extends SimpleModuleManager {
     public LaunchServerModulesManager(Path modulesDir, Path configDir, LauncherTrustManager trustManager) {
         super(modulesDir, configDir, trustManager);
         coreModule = new LaunchServerCoreModule();
+        checkMode = LauncherTrustManager.CheckMode.NONE_IN_NOT_SIGNED;
         modules.add(coreModule);
     }