diff --git a/activation.conf.example b/activation.conf.example
new file mode 100644
index 0000000..3296996
--- /dev/null
+++ b/activation.conf.example
@@ -0,0 +1,2 @@
+[SmartInputHookClass]
+EQUAL,O00oOO0
diff --git a/pom.xml b/pom.xml
index 5bcb25b..c9eaff3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -63,7 +63,7 @@
         <dependency>
             <groupId>com.ja-netfilter</groupId>
             <artifactId>ja-netfilter</artifactId>
-            <version>2.0.1</version>
+            <version>2.1.1</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/src/main/java/com/yelochick/ActivationPlugin.java b/src/main/java/com/yelochick/ActivationPlugin.java
index 65d4c28..584cf4f 100644
--- a/src/main/java/com/yelochick/ActivationPlugin.java
+++ b/src/main/java/com/yelochick/ActivationPlugin.java
@@ -1,14 +1,27 @@
 package com.yelochick;
 
+import com.janetfilter.core.Environment;
 import com.janetfilter.core.plugin.MyTransformer;
+import com.janetfilter.core.plugin.PluginConfig;
 import com.janetfilter.core.plugin.PluginEntry;
 import com.yelochick.coolrequest.VipApiTransformer;
 import com.yelochick.smartinput.OsLanguageManagerProxyTransformer;
 
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 public class ActivationPlugin implements PluginEntry {
+
+    private final List<MyTransformer> transformers = new ArrayList<>();
+
+    @Override
+    public void init(Environment environment, PluginConfig config) {
+        transformers.add(new VipApiTransformer());
+        transformers.add(new OsLanguageManagerProxyTransformer(config.getBySection("SmartInputHookClass")));
+    }
+
     @Override
     public String getName() {
         return "ACTIVATION";
@@ -21,9 +34,6 @@ public class ActivationPlugin implements PluginEntry {
 
     @Override
     public List<MyTransformer> getTransformers() {
-        return Arrays.asList(
-                new VipApiTransformer(),
-                new OsLanguageManagerProxyTransformer()
-        );
+        return Collections.unmodifiableList(transformers);
     }
 }
diff --git a/src/main/java/com/yelochick/smartinput/OsLanguageManagerProxyTransformer.java b/src/main/java/com/yelochick/smartinput/OsLanguageManagerProxyTransformer.java
index 495ba1e..c1158fd 100644
--- a/src/main/java/com/yelochick/smartinput/OsLanguageManagerProxyTransformer.java
+++ b/src/main/java/com/yelochick/smartinput/OsLanguageManagerProxyTransformer.java
@@ -1,12 +1,15 @@
 package com.yelochick.smartinput;
 
 import com.janetfilter.core.commons.DebugInfo;
+import com.janetfilter.core.models.FilterRule;
 import com.janetfilter.core.plugin.MyTransformer;
 import com.yelochick.SafeClassWriter;
 import jdk.internal.org.objectweb.asm.ClassReader;
 import jdk.internal.org.objectweb.asm.ClassWriter;
 import jdk.internal.org.objectweb.asm.tree.*;
 
+import java.util.List;
+
 import static jdk.internal.org.objectweb.asm.Opcodes.*;
 
 /**
@@ -14,13 +17,23 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
  */
 public class OsLanguageManagerProxyTransformer implements MyTransformer {
 
+    private final List<FilterRule> rules;
+
+    public OsLanguageManagerProxyTransformer(List<FilterRule> rules) {
+        this.rules = rules;
+    }
+
     @Override
     public String getHookClassName() {
-        return "O00oOO0";
+        return null;
     }
 
     @Override
     public byte[] transform(String className, byte[] classBytes, int order) throws Exception {
+        if (!classMatched(className)) {
+            return classBytes;
+        }
+
         ClassReader reader = new ClassReader(classBytes);
         ClassNode node = new ClassNode(ASM5);
         reader.accept(node, 0);
@@ -39,4 +52,14 @@ public class OsLanguageManagerProxyTransformer implements MyTransformer {
         node.accept(writer);
         return writer.toByteArray();
     }
+
+    private boolean classMatched(String className) {
+        for (FilterRule rule : rules) {
+            if (rule.test(className)) {
+                DebugInfo.output("Native wrapper: " + className + ", rule: " + rule);
+                return true;
+            }
+        }
+        return false;
+    }
 }