diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c994759b..dd861a945 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed duplication bug in the Interface.
+
 ## [v1.11.3] - 2022-12-20
 
 ### Fixed
diff --git a/src/main/java/com/refinedmods/refinedstorage/apiimpl/network/Network.java b/src/main/java/com/refinedmods/refinedstorage/apiimpl/network/Network.java
index 7911ee248..a24afc297 100644
--- a/src/main/java/com/refinedmods/refinedstorage/apiimpl/network/Network.java
+++ b/src/main/java/com/refinedmods/refinedstorage/apiimpl/network/Network.java
@@ -273,7 +273,7 @@ public class Network implements INetwork, IRedstoneConfigurable {
             return ItemHandlerHelper.copyStackWithSize(stack, size);
         }
 
-        ItemStack remainder = stack;
+        ItemStack remainder = ItemHandlerHelper.copyStackWithSize(stack, size);
 
         int inserted = 0;
         int insertedExternally = 0;
@@ -380,7 +380,7 @@ public class Network implements INetwork, IRedstoneConfigurable {
             return StackUtils.copy(stack, size);
         }
 
-        FluidStack remainder = stack;
+        FluidStack remainder = StackUtils.copy(stack, size);
 
         int inserted = 0;
         int insertedExternally = 0;