diff --git a/src/mc/world/item/ItemInstance.h b/src/mc/world/item/ItemInstance.h
index 11904b44a9..74c8b56cae 100644
--- a/src/mc/world/item/ItemInstance.h
+++ b/src/mc/world/item/ItemInstance.h
@@ -39,13 +39,14 @@ class ItemInstance : public ::ItemStackBase {
 
     MCAPI ItemInstance(::ItemInstance const& rhs);
 
-    MCAPI ItemInstance(::BlockLegacy const& block, int count);
+    MCAPI ItemInstance(::BlockLegacy const& block, int count = 1);
 
-    MCAPI ItemInstance(::Block const& block, int count, ::CompoundTag const* _userData);
+    MCAPI ItemInstance(::Block const& block, int count = 1, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemInstance(::Item const& item, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI ItemInstance(::Item const& item, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemInstance(::std::string_view name, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI
+    ItemInstance(::std::string_view name, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
     MCAPI ::ItemInstance clone() const;
 
diff --git a/src/mc/world/item/ItemStack.h b/src/mc/world/item/ItemStack.h
index f286c701de..7c3591cbf6 100644
--- a/src/mc/world/item/ItemStack.h
+++ b/src/mc/world/item/ItemStack.h
@@ -73,13 +73,13 @@ class ItemStack : public ::ItemStackBase {
 
     MCAPI explicit ItemStack(::ItemInstance const& rhs);
 
-    MCAPI ItemStack(::BlockLegacy const& block, int count);
+    MCAPI ItemStack(::BlockLegacy const& block, int count = 1);
 
-    MCAPI ItemStack(::Block const& block, int count, ::CompoundTag const* _userData);
+    MCAPI ItemStack(::Block const& block, int count = 1, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemStack(::Item const& item, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI ItemStack(::Item const& item, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemStack(::std::string_view name, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI ItemStack(::std::string_view name, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
     MCAPI void _assignNetIdVariant(::ItemStack const& fromItem) const;
 
diff --git a/src/mc/world/item/ItemStackBase.h b/src/mc/world/item/ItemStackBase.h
index 4431d8dcea..72c803606a 100644
--- a/src/mc/world/item/ItemStackBase.h
+++ b/src/mc/world/item/ItemStackBase.h
@@ -119,11 +119,12 @@ class ItemStackBase {
 
     MCAPI ItemStackBase(::BlockLegacy const& block, int count);
 
-    MCAPI ItemStackBase(::Block const& block, int count, ::CompoundTag const* _userData);
+    MCAPI ItemStackBase(::Block const& block, int count = 1, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemStackBase(::Item const& item, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI ItemStackBase(::Item const& item, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
-    MCAPI ItemStackBase(::std::string_view name, int count, int auxValue, ::CompoundTag const* _userData);
+    MCAPI
+    ItemStackBase(::std::string_view name, int count = 1, int auxValue = 0, ::CompoundTag const* _userData = nullptr);
 
     MCAPI void _addCustomUserDataCommon(::std::unique_ptr<::CompoundTag>&& tag);