diff --git a/core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java b/core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java
index e37fd3d60..965a7b99b 100644
--- a/core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java
+++ b/core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java
@@ -402,7 +402,6 @@ public class BitcoinSerializer extends MessageSerializer {
             checksum = new byte[4];
             // Note that the size read above includes the checksum bytes.
             System.arraycopy(header, cursor, checksum, 0, 4);
-            cursor += 4;
         }
     }