diff --git a/src/main/java/wanion/unidict/MetaItem.java b/src/main/java/wanion/unidict/MetaItem.java
index 366f5c3..677bb84 100644
--- a/src/main/java/wanion/unidict/MetaItem.java
+++ b/src/main/java/wanion/unidict/MetaItem.java
@@ -18,9 +18,11 @@
 import gnu.trove.set.hash.TIntHashSet;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
+import net.minecraftforge.oredict.OreDictionary;
 import wanion.unidict.resource.Resource;
 import wanion.unidict.resource.ResourceHandler;
 
+import javax.annotation.Nonnull;
 import java.util.Collection;
 import java.util.List;
 
@@ -37,7 +39,7 @@ public static int get(final ItemStack itemStack)
         if (itemStack == null || (item = itemStack.getItem()) == null)
             return 0;
         final int id = itemRegistry.getId(item);
-        return (id > 0) ? id | item.getDamage(itemStack) + 1 << 16 : 0;
+        return id > 0 ? item.getDamage(itemStack) == OreDictionary.WILDCARD_VALUE ? id : id | item.getDamage(itemStack) + 1 << 16 : 0;
     }
 
     public static int get(final Item item)
@@ -45,12 +47,12 @@ public static int get(final Item item)
         if (item == null)
             return 0;
         final int id = itemRegistry.getIDForObject(item);
-        return (id > 0) ? id | 65536 : 0;
+        return id > 0 ? id | 65536 : 0;
     }
 
     public static ItemStack toItemStack(final int metaItemKey)
     {
-        return metaItemKey > 0 ?  new ItemStack(itemRegistry.getRaw(metaItemKey ^ (metaItemKey & 65536)), 0, metaItemKey >> 16) : null;
+        return metaItemKey > 0 ? new ItemStack(itemRegistry.getRaw(metaItemKey ^ (metaItemKey & 65536)), 0, metaItemKey >> 16) : null;
     }
 
     public static int getCumulative(final Object[] objects, final ResourceHandler resourceHandler)
@@ -87,6 +89,20 @@ public static TIntList getList(final Collection<ItemStack> itemStackCollection)
         return keys;
     }
 
+    public static TIntList getList(@Nonnull final Object[] objects, @Nonnull final ResourceHandler resourceHandler)
+    {
+        final TIntList keys = new TIntArrayList();
+        int bufKey;
+        for (final Object object : objects)
+            if (object instanceof ItemStack) {
+                if ((bufKey = get(resourceHandler.getMainItemStack((ItemStack) object))) > 0)
+                    keys.add(bufKey);
+            } else if (object instanceof List && !((List) object).isEmpty())
+                if ((bufKey = get(((ItemStack) ((List) object).get(0)))) > 0)
+                    keys.add(bufKey);
+        return keys;
+    }
+
     public static TIntSet getSet(final Collection<Resource> resourceCollection, final long kind)
     {
         final TIntSet keys = new TIntHashSet();
diff --git a/src/main/java/wanion/unidict/recipe/ForgeRecipeResearcher.java b/src/main/java/wanion/unidict/recipe/ForgeRecipeResearcher.java
index 9d6cfda..e59df11 100644
--- a/src/main/java/wanion/unidict/recipe/ForgeRecipeResearcher.java
+++ b/src/main/java/wanion/unidict/recipe/ForgeRecipeResearcher.java
@@ -9,6 +9,8 @@
  */
 
 import cpw.mods.fml.common.Loader;
+import gnu.trove.iterator.TIntIterator;
+import gnu.trove.list.TIntList;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.crafting.IRecipe;
 import net.minecraftforge.oredict.ShapedOreRecipe;
@@ -30,13 +32,23 @@ public final class ForgeRecipeResearcher implements IRecipeResearcher<ShapedOreR
     @Override
     public int getShapedRecipeKey(@Nonnull final IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        return MetaItem.getCumulative(((ShapedOreRecipe) recipe).getInput(), resourceHandler);
+        final TIntList recipeKeys = MetaItem.getList(((ShapedOreRecipe) recipe).getInput(), resourceHandler);
+        int recipeKey = 0;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @Override
     public int getShapelessRecipeKey(@Nonnull final IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        return MetaItem.getCumulative(((ShapelessOreRecipe) recipe).getInput().toArray(), resourceHandler);
+        final TIntList recipeKeys = MetaItem.getList(((ShapelessOreRecipe) recipe).getInput().toArray(), resourceHandler);
+        int recipeKey = 0;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @SuppressWarnings("unchecked")
diff --git a/src/main/java/wanion/unidict/recipe/IC2RecipeResearcher.java b/src/main/java/wanion/unidict/recipe/IC2RecipeResearcher.java
index 27fb92a..67130ae 100644
--- a/src/main/java/wanion/unidict/recipe/IC2RecipeResearcher.java
+++ b/src/main/java/wanion/unidict/recipe/IC2RecipeResearcher.java
@@ -8,6 +8,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+import gnu.trove.iterator.TIntIterator;
+import gnu.trove.list.TIntList;
+import gnu.trove.list.array.TIntArrayList;
 import ic2.api.recipe.IRecipeInput;
 import ic2.core.AdvRecipe;
 import ic2.core.AdvShapelessRecipe;
@@ -30,40 +33,48 @@ public final class IC2RecipeResearcher implements IRecipeResearcher<AdvRecipe, A
     @Override
     public int getShapedRecipeKey(@Nonnull IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        int recipeId = 0;
+        final TIntList recipeKeys = new TIntArrayList();
+        int recipeKey = 0;
         for (final Object input : ((AdvRecipe) recipe).input) {
             if (input instanceof ItemStack)
-                recipeId += MetaItem.get(resourceHandler.getMainItemStack((ItemStack) input));
+                recipeKeys.add(MetaItem.get(resourceHandler.getMainItemStack((ItemStack) input)));
             else if (input instanceof List) {
                 if (((List) input).isEmpty())
                     continue;
                 final Object obj = ((List) input).get(0);
                 if (obj instanceof ItemStack)
-                    recipeId += MetaItem.get(resourceHandler.getMainItemStack((ItemStack) obj));
+                    recipeKeys.add(MetaItem.get(resourceHandler.getMainItemStack((ItemStack) obj)));
             } else if (input instanceof IRecipeInput)
-                recipeId += MetaItem.get(((IRecipeInput) input).getInputs().get(0));
+                recipeKeys.add(MetaItem.get(((IRecipeInput) input).getInputs().get(0)));
         }
-        return recipeId;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @Override
     public int getShapelessRecipeKey(@Nonnull IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        int recipeId = 0;
+        final TIntList recipeKeys = new TIntArrayList();
+        int recipeKey = 0;
         for (final Object input : ((AdvShapelessRecipe) recipe).input) {
             if (input instanceof ItemStack)
-                recipeId += MetaItem.get(resourceHandler.getMainItemStack((ItemStack) input));
+                recipeKeys.add(MetaItem.get(resourceHandler.getMainItemStack((ItemStack) input)));
             else if (input instanceof List) {
                 if (((List) input).isEmpty())
                     continue;
                 final Object obj = ((List) input).get(0);
                 if (obj instanceof ItemStack)
-                    recipeId += MetaItem.get(resourceHandler.getMainItemStack((ItemStack) obj));
+                    recipeKeys.add(MetaItem.get(resourceHandler.getMainItemStack((ItemStack) obj)));
                 else if (obj instanceof IRecipeInput)
-                    recipeId += MetaItem.get(((IRecipeInput) obj).getInputs().get(0));
+                    recipeKeys.add(MetaItem.get(((IRecipeInput) obj).getInputs().get(0)));
             }
         }
-        return recipeId;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @Override
diff --git a/src/main/java/wanion/unidict/recipe/VanillaRecipeResearcher.java b/src/main/java/wanion/unidict/recipe/VanillaRecipeResearcher.java
index 35d4506..ed5a2d8 100644
--- a/src/main/java/wanion/unidict/recipe/VanillaRecipeResearcher.java
+++ b/src/main/java/wanion/unidict/recipe/VanillaRecipeResearcher.java
@@ -8,6 +8,8 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+import gnu.trove.iterator.TIntIterator;
+import gnu.trove.list.TIntList;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.crafting.IRecipe;
 import net.minecraft.item.crafting.ShapedRecipes;
@@ -29,13 +31,23 @@ public final class VanillaRecipeResearcher implements IRecipeResearcher<ShapedRe
     @Override
     public int getShapedRecipeKey(@Nonnull final IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        return MetaItem.getCumulative(((ShapedRecipes) recipe).recipeItems, resourceHandler);
+        final TIntList recipeKeys = MetaItem.getList(((ShapedRecipes) recipe).recipeItems, resourceHandler);
+        int recipeKey = 0;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @Override
     public int getShapelessRecipeKey(@Nonnull final IRecipe recipe, @Nonnull final ResourceHandler resourceHandler)
     {
-        return MetaItem.getCumulative(((ShapelessRecipes) recipe).recipeItems.toArray(), resourceHandler);
+        final TIntList recipeKeys = MetaItem.getList(((ShapelessRecipes) recipe).recipeItems.toArray(), resourceHandler);
+        int recipeKey = 0;
+        recipeKeys.sort();
+        for (final TIntIterator recipeKeysIterator = recipeKeys.iterator(); recipeKeysIterator.hasNext(); )
+            recipeKey += 31 * recipeKeysIterator.next();
+        return recipeKey;
     }
 
     @Override