diff --git a/src/main/java/me/cortex/voxy/common/util/ByteBufferBackedInputStream.java b/src/main/java/me/cortex/voxy/common/util/ByteBufferBackedInputStream.java
index 9a3463c1..a6c16161 100644
--- a/src/main/java/me/cortex/voxy/common/util/ByteBufferBackedInputStream.java
+++ b/src/main/java/me/cortex/voxy/common/util/ByteBufferBackedInputStream.java
@@ -6,7 +6,7 @@ import java.nio.ByteBuffer;
 
 public class ByteBufferBackedInputStream extends InputStream {
 
-    ByteBuffer buf;
+    private final ByteBuffer buf;
 
     public ByteBufferBackedInputStream(ByteBuffer buf) {
         this.buf = buf;