diff --git a/src/main/java/net/minecraft/server/ContainerAnvilInventory.java b/src/main/java/net/minecraft/server/ContainerAnvilInventory.java
index 20d7c69cff..1afa6e7929 100644
--- a/src/main/java/net/minecraft/server/ContainerAnvilInventory.java
+++ b/src/main/java/net/minecraft/server/ContainerAnvilInventory.java
@@ -46,6 +46,12 @@ public class ContainerAnvilInventory extends InventorySubcontainer { // CraftBuk
         this.setMaxStackSize(1); // CraftBukkit
     }
 
+    // CraftBukkit start - override inherited maxStack from InventorySubcontainer
+    public int getMaxStackSize() {
+        return maxStack;
+    }
+    // CraftBukkit end
+
     public void update() {
         super.update();
         this.a.a((IInventory) this);
diff --git a/src/main/java/net/minecraft/server/EntityMinecartContainer.java b/src/main/java/net/minecraft/server/EntityMinecartContainer.java
index 9f3f196b5c..b599eeba11 100644
--- a/src/main/java/net/minecraft/server/EntityMinecartContainer.java
+++ b/src/main/java/net/minecraft/server/EntityMinecartContainer.java
@@ -145,7 +145,7 @@ public abstract class EntityMinecartContainer extends EntityMinecartAbstract imp
     }
 
     public int getMaxStackSize() {
-        return 64;
+        return maxStack; // CraftBukkit
     }
 
     public void b(int i) {
diff --git a/src/main/java/net/minecraft/server/PlayerInventory.java b/src/main/java/net/minecraft/server/PlayerInventory.java
index 83cbb97c04..e9b49d1ebe 100644
--- a/src/main/java/net/minecraft/server/PlayerInventory.java
+++ b/src/main/java/net/minecraft/server/PlayerInventory.java
@@ -411,7 +411,7 @@ public class PlayerInventory implements IInventory {
     }
 
     public int getMaxStackSize() {
-        return 64;
+        return maxStack; // CraftBukkit
     }
 
     public boolean b(Block block) {
diff --git a/src/main/java/net/minecraft/server/TileEntityHopper.java b/src/main/java/net/minecraft/server/TileEntityHopper.java
index 3f1a910ed8..48a882acf9 100644
--- a/src/main/java/net/minecraft/server/TileEntityHopper.java
+++ b/src/main/java/net/minecraft/server/TileEntityHopper.java
@@ -150,7 +150,7 @@ public class TileEntityHopper extends TileEntity implements IHopper {
     }
 
     public int getMaxStackSize() {
-        return 64;
+        return maxStack; // CraftBukkit
     }
 
     public boolean a(EntityHuman entityhuman) {