diff --git a/paper-server/patches/sources/net/minecraft/world/entity/player/Inventory.java.patch b/paper-server/patches/sources/net/minecraft/world/entity/player/Inventory.java.patch
index e3c7a74106..be3c5cccdb 100644
--- a/paper-server/patches/sources/net/minecraft/world/entity/player/Inventory.java.patch
+++ b/paper-server/patches/sources/net/minecraft/world/entity/player/Inventory.java.patch
@@ -69,8 +69,12 @@
      public Inventory(Player player) {
          this.items = NonNullList.withSize(36, ItemStack.EMPTY);
          this.armor = NonNullList.withSize(4, ItemStack.EMPTY);
-@@ -59,6 +113,28 @@
-         return !existingStack.isEmpty() && ItemStack.isSameItemSameComponents(existingStack, stack) && existingStack.isStackable() && existingStack.getCount() < this.getMaxStackSize(existingStack);
+@@ -56,9 +110,31 @@
+     }
+ 
+     private boolean hasRemainingSpaceForItem(ItemStack existingStack, ItemStack stack) {
+-        return !existingStack.isEmpty() && ItemStack.isSameItemSameComponents(existingStack, stack) && existingStack.isStackable() && existingStack.getCount() < this.getMaxStackSize(existingStack);
++        return !existingStack.isEmpty() && existingStack.isStackable() && existingStack.getCount() < this.getMaxStackSize(existingStack) && ItemStack.isSameItemSameComponents(existingStack, stack); // Paper - check if itemstack is stackable first
      }
  
 +    // CraftBukkit start - Watch method above! :D