diff --git a/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/BetterClassWriter.java b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/BetterClassWriter.java
new file mode 100644
index 00000000..2af51b92
--- /dev/null
+++ b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/BetterClassWriter.java
@@ -0,0 +1,39 @@
+package fr.catcore.fabricatedforge.compat;
+
+import net.fabricmc.loader.api.FabricLoader;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassWriter;
+
+public class BetterClassWriter extends ClassWriter {
+    public BetterClassWriter(int flags) {
+        super(flags);
+    }
+
+    public BetterClassWriter(ClassReader classReader, int flags) {
+        super(classReader, flags);
+    }
+
+    @Override
+    protected String getCommonSuperClass(String type1, String type2) {
+        try {
+            return super.getCommonSuperClass(type1, type2);
+        } catch (TypeNotPresentException e) {
+            if ("net/minecraft/class_1071".equals(type1) && "net/minecraft/class_987".equals(type2)) {
+                return "java/lang/Object";
+            }
+
+            if ("net/minecraft/class_987".equals(type1) && "java/lang/Object".equals(type2)) {
+                return type2;
+            }
+
+            System.out.println("Common of: " + type1 + " " + type2);
+            e.printStackTrace();
+            return "java/lang/Object";
+        }
+    }
+
+    @Override
+    protected ClassLoader getClassLoader() {
+        return FabricLoader.getInstance().getClass().getClassLoader();
+    }
+}
diff --git a/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/CompatUtils.java b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/CompatUtils.java
new file mode 100644
index 00000000..6a1027e8
--- /dev/null
+++ b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/CompatUtils.java
@@ -0,0 +1,22 @@
+package fr.catcore.fabricatedforge.compat;
+
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.ClassNode;
+
+public class CompatUtils {
+    public static ClassNode createNode(byte[] bytes, int parsingOptions) {
+        ClassNode node = new ClassNode(Opcodes.ASM4);
+        ClassReader reader = new ClassReader(bytes);
+        reader.accept(node, parsingOptions);
+
+        return node;
+    }
+
+    public static byte[] writeClass(ClassNode node, int flags) {
+        BetterClassWriter classWriter = new BetterClassWriter(flags);
+        node.accept(classWriter);
+
+        return classWriter.toByteArray();
+    }
+}
diff --git a/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/Dummy.java b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/Dummy.java
index 9f148b0b..6ecac0f3 100644
--- a/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/Dummy.java
+++ b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/Dummy.java
@@ -5,5 +5,6 @@
 public class Dummy implements PreLaunchEntrypoint {
     @Override
     public void onPreLaunch() {
+        System.out.println("Gotcha Mixin!");
     }
 }
diff --git a/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/mixin/nei/NEITransformerMixin.java b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/mixin/nei/NEITransformerMixin.java
new file mode 100644
index 00000000..8e3fbb8f
--- /dev/null
+++ b/mod-compat/src/main/java/fr/catcore/fabricatedforge/compat/mixin/nei/NEITransformerMixin.java
@@ -0,0 +1,52 @@
+package fr.catcore.fabricatedforge.compat.mixin.nei;
+
+import codechicken.core.asm.ClassHeirachyManager;
+import codechicken.core.asm.InstructionComparator;
+import codechicken.core.asm.ObfuscationManager;
+import codechicken.nei.asm.NEITransformer;
+import fr.catcore.fabricatedforge.compat.CompatUtils;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.InsnList;
+import org.objectweb.asm.tree.MethodNode;
+import org.objectweb.asm.tree.VarInsnNode;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+
+@Mixin(NEITransformer.class)
+public class NEITransformerMixin {
+    /**
+     * @author CatCore
+     * @reason fix classwriter
+     */
+    @Overwrite(remap = false)
+    public byte[] transformer001(String name, byte[] bytes) {
+        ObfuscationManager.ClassMapping classmap = new ObfuscationManager.ClassMapping("aqh");
+
+        if (ClassHeirachyManager.classExtends(name, classmap.classname, bytes)) {
+            ClassNode node = CompatUtils.createNode(bytes, 0);
+
+            ObfuscationManager.MethodMapping methodmap = new ObfuscationManager.MethodMapping("apn", "c", "()V");
+            ObfuscationManager.MethodMapping supermap = new ObfuscationManager.MethodMapping(node.superName, methodmap);
+            InsnList supercall = new InsnList();
+            supercall.add(new VarInsnNode(25, 0));
+            supercall.add(supermap.toInsn(183));
+
+            for(MethodNode methodnode : node.methods) {
+                if (methodmap.matches(methodnode)) {
+                    InsnList importantNodeList = InstructionComparator.getImportantList(methodnode.instructions);
+
+                    if (!InstructionComparator.insnListMatches(importantNodeList, supercall, 0)) {
+                        methodnode.instructions.insertBefore(methodnode.instructions.getFirst(), supercall);
+                        System.out.println("Inserted super call into " + name + "." + supermap.name);
+                    }
+                }
+            }
+
+            bytes = CompatUtils.writeClass(node, 3);
+        }
+
+        return bytes;
+    }
+}
diff --git a/mod-compat/src/main/resources/fabricated-forge.mods.mixins.json b/mod-compat/src/main/resources/fabricated-forge.mods.mixins.json
index 17855345..aee5cb21 100644
--- a/mod-compat/src/main/resources/fabricated-forge.mods.mixins.json
+++ b/mod-compat/src/main/resources/fabricated-forge.mods.mixins.json
@@ -12,6 +12,7 @@
     "codechickencore.FieldMappingMixin",
     "codechickencore.MethodMappingMixin",
     "nei.FurnaceRecipeHandlerMixin",
+    "nei.NEITransformerMixin",
     "nei.TMIUninstallerMixin"
   ],
   "client": [
diff --git a/src/main/java/cpw/mods/fml/relauncher/IClassTransformer.java b/src/main/java/cpw/mods/fml/relauncher/IClassTransformer.java
index ab7f46ba..8833e6da 100644
--- a/src/main/java/cpw/mods/fml/relauncher/IClassTransformer.java
+++ b/src/main/java/cpw/mods/fml/relauncher/IClassTransformer.java
@@ -53,7 +53,7 @@ default boolean handlesClass(String s, String s1) {
         }
 
         transformed.get(this).add(s);
-        if (s.equals("net.minecraft.class_415") && this.getClass().getName().equals("codechicken.nei.asm.NEITransformer")) return false;
+
         return true;
     }
 }
\ No newline at end of file