diff --git a/src/library/Syroot.Worms.Armageddon/GeneratedMap.cs b/src/library/Syroot.Worms.Armageddon/GeneratedMap.cs
index 687f29b..6656497 100644
--- a/src/library/Syroot.Worms.Armageddon/GeneratedMap.cs
+++ b/src/library/Syroot.Worms.Armageddon/GeneratedMap.cs
@@ -57,7 +57,7 @@ namespace Syroot.Worms.Armageddon
         /// <inheritdoc/>
         public void Save(Stream stream)
         {
-            using BinaryStream writer = new BinaryStream(stream, encoding: Encoding.ASCII);
+            using BinaryStream writer = new BinaryStream(stream, encoding: Encoding.ASCII, leaveOpen: true);
             writer.WriteStruct(Settings);
         }
 
diff --git a/src/library/Syroot.Worms.Armageddon/LandData.cs b/src/library/Syroot.Worms.Armageddon/LandData.cs
index 09dc380..d2a9364 100644
--- a/src/library/Syroot.Worms.Armageddon/LandData.cs
+++ b/src/library/Syroot.Worms.Armageddon/LandData.cs
@@ -129,7 +129,7 @@ namespace Syroot.Worms.Armageddon
         /// <inheritdoc/>
         public void Save(Stream stream)
         {
-            using BinaryStream writer = new BinaryStream(stream, encoding: Encoding.ASCII);
+            using BinaryStream writer = new BinaryStream(stream, encoding: Encoding.ASCII, leaveOpen: true);
 
             // Write the header.
             writer.Write(_signature);