diff --git a/jetty-util/src/main/java/org/eclipse/jetty/util/BufferUtil.java b/jetty-util/src/main/java/org/eclipse/jetty/util/BufferUtil.java
index 85ee7a6327d..198e9e747a0 100644
--- a/jetty-util/src/main/java/org/eclipse/jetty/util/BufferUtil.java
+++ b/jetty-util/src/main/java/org/eclipse/jetty/util/BufferUtil.java
@@ -84,7 +84,7 @@ import java.nio.charset.Charset;
  */
 public class BufferUtil
 {
-    static final int TEMP_BUFFER_SIZE = 512;
+    static final int TEMP_BUFFER_SIZE = 4096;
     static final byte SPACE = 0x20;
     static final byte MINUS = '-';
     static final byte[] DIGIT =