diff --git a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/helper/AsmHelper.java b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/helper/AsmHelper.java
index 65e3b00..29fb9f1 100644
--- a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/helper/AsmHelper.java
+++ b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/helper/AsmHelper.java
@@ -124,6 +124,7 @@ public static Type getTypeFromPrimitiveCast(MethodInsnNode insn) {
     if (insn.owner.equals("java/lang/Long") && insn.name.equals("longValue")) return Type.LONG_TYPE;
     if (insn.owner.equals("java/lang/Double") && insn.name.equals("doubleValue")) return Type.DOUBLE_TYPE;
     if (insn.owner.equals("java/lang/Float") && insn.name.equals("floatValue")) return Type.FLOAT_TYPE;
+    if (insn.owner.equals("java/lang/Boolean") && insn.name.equals("booleanValue")) return Type.BOOLEAN_TYPE;
 
     throw new IllegalStateException("Unexpected value: " + insn.owner+"."+insn.name+insn.desc);
   }
diff --git a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/ComposedTransformer.java b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/ComposedTransformer.java
index ca840a4..9065541 100644
--- a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/ComposedTransformer.java
+++ b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/ComposedTransformer.java
@@ -3,15 +3,16 @@
 import java.util.List;
 import java.util.function.Supplier;
 
+import org.jetbrains.annotations.Nullable;
 import uwu.narumi.deobfuscator.api.asm.ClassWrapper;
 import uwu.narumi.deobfuscator.api.context.Context;
 
 public class ComposedTransformer extends Transformer {
 
-  private final List<Supplier<Transformer>> transformers;
+  private final List<Supplier<@Nullable Transformer>> transformers;
 
   @SafeVarargs
-  public ComposedTransformer(Supplier<Transformer>... transformers) {
+  public ComposedTransformer(Supplier<@Nullable Transformer>... transformers) {
     this.transformers = List.of(transformers);
   }
 
diff --git a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/Transformer.java b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/Transformer.java
index 6cfe4dc..b7249c3 100644
--- a/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/Transformer.java
+++ b/deobfuscator-api/src/main/java/uwu/narumi/deobfuscator/api/transformer/Transformer.java
@@ -72,17 +72,22 @@ public String name() {
    * @param context The context
    * @return If the transformation changed something
    */
-  public static boolean transform(Supplier<Transformer> transformerSupplier, @Nullable ClassWrapper scope, Context context) {
+  public static boolean transform(Supplier<@Nullable Transformer> transformerSupplier, @Nullable ClassWrapper scope, Context context) {
     return transform(transformerSupplier, scope, context, false);
   }
 
   private static boolean transform(
-      Supplier<Transformer> transformerSupplier,
+      Supplier<@Nullable Transformer> transformerSupplier,
       @Nullable ClassWrapper scope,
       Context context,
       boolean reran
   ) {
     Transformer transformer = transformerSupplier.get();
+    if (transformer == null) {
+      // Null means that transformer is disabled. Skip it
+      return false;
+    }
+
     if (transformer.hasRan) {
       throw new IllegalArgumentException("transformerSupplier tried to reuse transformer instance. You must pass a new instance of transformer");
     }
diff --git a/deobfuscator-impl/src/test/java/uwu/narumi/deobfuscator/TestDeobfuscation.java b/deobfuscator-impl/src/test/java/uwu/narumi/deobfuscator/TestDeobfuscation.java
index faf9013..4bb1cfe 100644
--- a/deobfuscator-impl/src/test/java/uwu/narumi/deobfuscator/TestDeobfuscation.java
+++ b/deobfuscator-impl/src/test/java/uwu/narumi/deobfuscator/TestDeobfuscation.java
@@ -39,7 +39,7 @@ protected void registerAll() {
     register("Some flow obf sample", InputType.CUSTOM_CLASS, List.of(ComposedGeneralFlowTransformer::new), Source.of("FlowObfSample"));
 
     // Zelix
-    register("Zelix (22.0.3) Sample 1", InputType.CUSTOM_CLASS, List.of(ComposedZelixTransformer::new),
+    register("Zelix (22.0.3) Sample 1", InputType.CUSTOM_CLASS, List.of(() -> new ComposedZelixTransformer(true)),
         Source.of("zkm/sample1/ExampleClass"),
         Source.of("zkm/sample1/ILongDecrypter", false),
         Source.of("zkm/sample1/LongDecrypter1", false),
@@ -69,7 +69,7 @@ protected void registerAll() {
      */
     register("Zelix (22.0.3) Sample 2 - Class initialization order", InputType.CUSTOM_CLASS,
         List.of(
-            () -> new ComposedZelixTransformer(
+            () -> new ComposedZelixTransformer(true,
                 // During obfuscation was specified classInitializationOrder option,
                 // so we need to also pass it here for correct decrypted values
                 Map.of("a.a.a.a.a4", "a.a.a.a.bc")
@@ -103,7 +103,7 @@ protected void registerAll() {
             obfuscateParameters=normal;
      */
     register("Zelix (21) Snake Game", InputType.CUSTOM_JAR,
-        List.of(ComposedZelixTransformer::new),
+        List.of(() -> new ComposedZelixTransformer(true)),
         Source.of("SnakeGame-obf-zkm")
     );
 
diff --git a/deobfuscator-transformers/src/main/java/uwu/narumi/deobfuscator/core/other/composed/ComposedZelixTransformer.java b/deobfuscator-transformers/src/main/java/uwu/narumi/deobfuscator/core/other/composed/ComposedZelixTransformer.java
index 0e04ac7..a4d56bb 100644
--- a/deobfuscator-transformers/src/main/java/uwu/narumi/deobfuscator/core/other/composed/ComposedZelixTransformer.java
+++ b/deobfuscator-transformers/src/main/java/uwu/narumi/deobfuscator/core/other/composed/ComposedZelixTransformer.java
@@ -18,10 +18,14 @@
  */
 public class ComposedZelixTransformer extends ComposedTransformer {
   public ComposedZelixTransformer() {
-    this(new HashMap<>());
+    this(false);
   }
 
-  public ComposedZelixTransformer(Map<String, String> classInitializationOrder) {
+  public ComposedZelixTransformer(boolean experimental) {
+    this(experimental, new HashMap<>());
+  }
+
+  public ComposedZelixTransformer(boolean experimental, Map<String, String> classInitializationOrder) {
     super(
         // Initial cleanup
         JsrInlinerTransformer::new,
@@ -31,7 +35,7 @@ public ComposedZelixTransformer(Map<String, String> classInitializationOrder) {
         ZelixUselessTryCatchRemoverTransformer::new,
 
         // Decompose method parameters
-        ZelixParametersTransformer::new,
+        () -> experimental ? new ZelixParametersTransformer() : null,
 
         // Decrypt longs
         () -> new ZelixLongEncryptionMPCTransformer(classInitializationOrder),