diff --git a/codec/src/main/java/io/netty/handler/codec/compression/LzfDecoder.java b/codec/src/main/java/io/netty/handler/codec/compression/LzfDecoder.java
index 2d65ef7b1a..a9b09be8c8 100644
--- a/codec/src/main/java/io/netty/handler/codec/compression/LzfDecoder.java
+++ b/codec/src/main/java/io/netty/handler/codec/compression/LzfDecoder.java
@@ -147,7 +147,7 @@ public class LzfDecoder extends ByteToMessageDecoder {
 
                         ByteBuf uncompressed = ctx.alloc().heapBuffer(originalLength, originalLength);
                         final byte[] outputArray = uncompressed.array();
-                        final int outPos = uncompressed.arrayOffset();
+                        final int outPos = uncompressed.arrayOffset() + uncompressed.writerIndex();
 
                         boolean success = false;
                         try {