diff --git a/src/codechicken/core/asm/CodeChickenAccessTransformer.java b/src/codechicken/core/asm/CodeChickenAccessTransformer.java
index a066f98..d948541 100644
--- a/src/codechicken/core/asm/CodeChickenAccessTransformer.java
+++ b/src/codechicken/core/asm/CodeChickenAccessTransformer.java
@@ -2,11 +2,7 @@ package codechicken.core.asm;
 
 import java.io.IOException;
 import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.LinkedList;
-import java.util.List;
 
-import codechicken.core.launch.CodeChickenCorePlugin;
 import com.google.common.collect.ImmutableBiMap;
 
 import codechicken.lib.asm.ObfMapping;
diff --git a/src/codechicken/core/asm/DelegatedTransformer.java b/src/codechicken/core/asm/DelegatedTransformer.java
index e1b4336..c212469 100644
--- a/src/codechicken/core/asm/DelegatedTransformer.java
+++ b/src/codechicken/core/asm/DelegatedTransformer.java
@@ -101,7 +101,7 @@ public class DelegatedTransformer implements IClassTransformer
     private static void defineDependancies(byte[] bytes, JarFile jar, File jarFile, Stack<String> depStack) throws Exception
     {
         ClassReader reader = new ClassReader(bytes);
-        DependancyLister lister = new DependancyLister(Opcodes.ASM5);
+        DependancyLister lister = new DependancyLister(Opcodes.ASM4);
         reader.accept(lister, 0);
         
         depStack.push(reader.getClassName());
diff --git a/src/codechicken/core/asm/DependancyLister.java b/src/codechicken/core/asm/DependancyLister.java
index 9f2d1c9..a732bbf 100644
--- a/src/codechicken/core/asm/DependancyLister.java
+++ b/src/codechicken/core/asm/DependancyLister.java
@@ -76,7 +76,7 @@ public class DependancyLister extends ClassVisitor
     public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)
     {
         dependDesc(desc);
-        return new DependancyMethodLister(Opcodes.ASM5);
+        return new DependancyMethodLister(Opcodes.ASM4);
     }
     
     @Override
diff --git a/src/codechicken/core/asm/MethodASMifier.java b/src/codechicken/core/asm/MethodASMifier.java
index 12d61bb..8a40d79 100644
--- a/src/codechicken/core/asm/MethodASMifier.java
+++ b/src/codechicken/core/asm/MethodASMifier.java
@@ -22,7 +22,7 @@ public class MethodASMifier extends ClassVisitor
     Printer asmifier;
 
     public MethodASMifier(ObfMapping method, Printer printer, PrintWriter printWriter) {
-        super(ASM5);
+        super(ASM4);
         this.method = method;
         this.printWriter = printWriter;
         asmifier = printer;