diff --git a/akka-actor/src/main/scala/akka/util/ByteString.scala b/akka-actor/src/main/scala/akka/util/ByteString.scala
index 94fa7a4ea3..5d769d9fb6 100644
--- a/akka-actor/src/main/scala/akka/util/ByteString.scala
+++ b/akka-actor/src/main/scala/akka/util/ByteString.scala
@@ -574,7 +574,7 @@ final class ByteStringBuilder extends Builder[Byte, ByteString] {
   /**
    * Add a single Short to this builder.
    */
-  def putShort(x: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type = {
+  def putShort(x: Int)(implicit byteOrder: ByteOrder): this.type = {
     if (byteOrder == ByteOrder.BIG_ENDIAN) {
       this += (x >>> 8).toByte
       this += (x >>> 0).toByte
@@ -587,7 +587,7 @@ final class ByteStringBuilder extends Builder[Byte, ByteString] {
   /**
    * Add a single Int to this builder.
    */
-  def putInt(x: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type = {
+  def putInt(x: Int)(implicit byteOrder: ByteOrder): this.type = {
     fillArray(4) {
       case (target, offset) ⇒ {
         if (byteOrder == ByteOrder.BIG_ENDIAN) {
@@ -609,7 +609,7 @@ final class ByteStringBuilder extends Builder[Byte, ByteString] {
   /**
    * Add a single Long to this builder.
    */
-  def putLong(x: Long)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type = {
+  def putLong(x: Long)(implicit byteOrder: ByteOrder): this.type = {
     fillArray(8) {
       case (target, offset) ⇒ {
         if (byteOrder == ByteOrder.BIG_ENDIAN) {
@@ -639,15 +639,21 @@ final class ByteStringBuilder extends Builder[Byte, ByteString] {
   /**
    * Add a single Float to this builder.
    */
-  def putFloat(x: Float)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putFloat(x: Float)(implicit byteOrder: ByteOrder): this.type =
     putInt(java.lang.Float.floatToRawIntBits(x))(byteOrder)
 
   /**
    * Add a single Double to this builder.
    */
-  def putDouble(x: Double)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putDouble(x: Double)(implicit byteOrder: ByteOrder): this.type =
     putLong(java.lang.Double.doubleToRawLongBits(x))(byteOrder)
 
+  /**
+   * Add a number of Bytes from an array to this builder.
+   */
+  def putBytes(array: Array[Byte]): this.type =
+    putBytes(array, 0, array.length)
+
   /**
    * Add a number of Bytes from an array to this builder.
    */
@@ -657,31 +663,61 @@ final class ByteStringBuilder extends Builder[Byte, ByteString] {
   /**
    * Add a number of Shorts from an array to this builder.
    */
-  def putShorts(array: Array[Short], start: Int, len: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putShorts(array: Array[Short])(implicit byteOrder: ByteOrder): this.type =
+    putShorts(array, 0, array.length)(byteOrder)
+
+  /**
+   * Add a number of Shorts from an array to this builder.
+   */
+  def putShorts(array: Array[Short], start: Int, len: Int)(implicit byteOrder: ByteOrder): this.type =
     fillByteBuffer(len * 2, byteOrder) { _.asShortBuffer.put(array, start, len) }
 
   /**
    * Add a number of Ints from an array to this builder.
    */
-  def putInts(array: Array[Int], start: Int, len: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putInts(array: Array[Int])(implicit byteOrder: ByteOrder): this.type =
+    putInts(array, 0, array.length)(byteOrder)
+
+  /**
+   * Add a number of Ints from an array to this builder.
+   */
+  def putInts(array: Array[Int], start: Int, len: Int)(implicit byteOrder: ByteOrder): this.type =
     fillByteBuffer(len * 4, byteOrder) { _.asIntBuffer.put(array, start, len) }
 
   /**
    * Add a number of Longs from an array to this builder.
    */
-  def putLongs(array: Array[Long], start: Int, len: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putLongs(array: Array[Long])(implicit byteOrder: ByteOrder): this.type =
+    putLongs(array, 0, array.length)(byteOrder)
+
+  /**
+   * Add a number of Longs from an array to this builder.
+   */
+  def putLongs(array: Array[Long], start: Int, len: Int)(implicit byteOrder: ByteOrder): this.type =
     fillByteBuffer(len * 8, byteOrder) { _.asLongBuffer.put(array, start, len) }
 
   /**
    * Add a number of Floats from an array to this builder.
    */
-  def putFloats(array: Array[Float], start: Int, len: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putFloats(array: Array[Float])(implicit byteOrder: ByteOrder): this.type =
+    putFloats(array, 0, array.length)(byteOrder)
+
+  /**
+   * Add a number of Floats from an array to this builder.
+   */
+  def putFloats(array: Array[Float], start: Int, len: Int)(implicit byteOrder: ByteOrder): this.type =
     fillByteBuffer(len * 4, byteOrder) { _.asFloatBuffer.put(array, start, len) }
 
   /**
    * Add a number of Doubles from an array to this builder.
    */
-  def putDoubles(array: Array[Double], start: Int, len: Int)(implicit byteOrder: ByteOrder = ByteOrder.BIG_ENDIAN): this.type =
+  def putDoubles(array: Array[Double])(implicit byteOrder: ByteOrder): this.type =
+    putDoubles(array, 0, array.length)(byteOrder)
+
+  /**
+   * Add a number of Doubles from an array to this builder.
+   */
+  def putDoubles(array: Array[Double], start: Int, len: Int)(implicit byteOrder: ByteOrder): this.type =
     fillByteBuffer(len * 8, byteOrder) { _.asDoubleBuffer.put(array, start, len) }
 
   def clear() {