diff --git a/src/main/java/net/minestom/server/item/ItemStack.java b/src/main/java/net/minestom/server/item/ItemStack.java
index 07f92e228..ee04bd266 100644
--- a/src/main/java/net/minestom/server/item/ItemStack.java
+++ b/src/main/java/net/minestom/server/item/ItemStack.java
@@ -88,15 +88,15 @@ public sealed interface ItemStack extends TagReadable, HoverEventSource<HoverEve
     <T extends ItemMetaView<?>> @NotNull T meta(@NotNull Class<T> metaClass);
 
     @Contract(value = "_, -> new", pure = true)
-    @NotNull ItemStack with(@NotNull Consumer<@NotNull Builder> builderConsumer);
+    @NotNull ItemStack with(@NotNull Consumer<@NotNull Builder> consumer);
 
     @Contract(value = "_, _ -> new", pure = true)
     @ApiStatus.Experimental
     <V extends ItemMetaView.Builder, T extends ItemMetaView<V>> @NotNull ItemStack withMeta(@NotNull Class<T> metaType,
-                                                                                            @NotNull Consumer<V> metaConsumer);
+                                                                                            @NotNull Consumer<V> consumer);
 
     @Contract(value = "_ -> new", pure = true)
-    @NotNull ItemStack withMeta(@NotNull UnaryOperator<ItemMeta.@NotNull Builder> metaOperator);
+    @NotNull ItemStack withMeta(@NotNull Consumer<ItemMeta.@NotNull Builder> consumer);
 
     @Contract(value = "_, -> new", pure = true)
     default @NotNull ItemStack withMaterial(@NotNull Material material) {
@@ -204,7 +204,8 @@ public sealed interface ItemStack extends TagReadable, HoverEventSource<HoverEve
         return meta();
     }
 
-    sealed interface Builder extends Taggable permits ItemStackImpl.Builder {
+    sealed interface Builder extends Taggable
+            permits ItemStackImpl.Builder {
         @Contract(value = "_ -> this")
         @NotNull Builder amount(int amount);
 
@@ -218,10 +219,11 @@ public sealed interface ItemStack extends TagReadable, HoverEventSource<HoverEve
         @NotNull Builder meta(@NotNull ItemMeta itemMeta);
 
         @Contract(value = "_ -> this")
-        @NotNull Builder meta(@NotNull UnaryOperator<ItemMeta.@NotNull Builder> consumer);
+        @NotNull Builder meta(@NotNull Consumer<ItemMeta.@NotNull Builder> consumer);
 
         @Contract(value = "_, _ -> this")
-        <V extends ItemMetaView.Builder, T extends ItemMetaView<V>> @NotNull Builder meta(@NotNull Class<T> metaType, @NotNull Consumer<@NotNull V> itemMetaConsumer);
+        <V extends ItemMetaView.Builder, T extends ItemMetaView<V>> @NotNull Builder meta(@NotNull Class<T> metaType,
+                                                                                          @NotNull Consumer<@NotNull V> itemMetaConsumer);
 
         @Contract(value = "-> new", pure = true)
         @NotNull ItemStack build();
diff --git a/src/main/java/net/minestom/server/item/ItemStackImpl.java b/src/main/java/net/minestom/server/item/ItemStackImpl.java
index 8f44f4329..f5041c126 100644
--- a/src/main/java/net/minestom/server/item/ItemStackImpl.java
+++ b/src/main/java/net/minestom/server/item/ItemStackImpl.java
@@ -11,7 +11,6 @@ import org.jglrxavpok.hephaistos.nbt.NBTString;
 
 import java.util.Map;
 import java.util.function.Consumer;
-import java.util.function.UnaryOperator;
 
 record ItemStackImpl(Material material, int amount, ItemMetaImpl meta) implements ItemStack {
     static final @NotNull StackingRule DEFAULT_STACKING_RULE;
@@ -45,21 +44,21 @@ record ItemStackImpl(Material material, int amount, ItemMetaImpl meta) implement
     }
 
     @Override
-    public @NotNull ItemStack with(@NotNull Consumer<ItemStack.@NotNull Builder> builderConsumer) {
+    public @NotNull ItemStack with(@NotNull Consumer<ItemStack.@NotNull Builder> consumer) {
         ItemStack.Builder builder = builder();
-        builderConsumer.accept(builder);
+        consumer.accept(builder);
         return builder.build();
     }
 
     @Override
     public @NotNull <V extends ItemMetaView.Builder, T extends ItemMetaView<V>> ItemStack withMeta(@NotNull Class<T> metaType,
-                                                                                                   @NotNull Consumer<V> metaConsumer) {
-        return builder().meta(metaType, metaConsumer).build();
+                                                                                                   @NotNull Consumer<V> consumer) {
+        return builder().meta(metaType, consumer).build();
     }
 
     @Override
-    public @NotNull ItemStack withMeta(@NotNull UnaryOperator<ItemMeta.@NotNull Builder> metaOperator) {
-        return builder().meta(metaOperator).build();
+    public @NotNull ItemStack withMeta(@NotNull Consumer<ItemMeta.@NotNull Builder> consumer) {
+        return builder().meta(consumer).build();
     }
 
     @Override
@@ -124,8 +123,8 @@ record ItemStackImpl(Material material, int amount, ItemMetaImpl meta) implement
         }
 
         @Override
-        public ItemStack.@NotNull Builder meta(@NotNull UnaryOperator<ItemMeta.Builder> consumer) {
-            this.metaBuilder = (ItemMetaImpl.Builder) consumer.apply(metaBuilder);
+        public ItemStack.@NotNull Builder meta(@NotNull Consumer<ItemMeta.Builder> consumer) {
+            consumer.accept(metaBuilder);
             return this;
         }