diff --git a/reference/spl/seekableiterator.xml b/reference/spl/seekableiterator.xml
index 9bfd3ed194..612a2c2765 100644
--- a/reference/spl/seekableiterator.xml
+++ b/reference/spl/seekableiterator.xml
@@ -59,7 +59,7 @@
 <?php
 class MySeekableIterator implements SeekableIterator {
 
-    private $position = 0;
+    private $position;
 
     private $array = array(
         "first element",
@@ -68,20 +68,18 @@ class MySeekableIterator implements SeekableIterator {
         "fourth element"
     );
 
+    /* Method required for SeekableIterator interface */
+
     public function seek($position) {
-      $this->position = $position;
-      
-      if (!$this->valid()) {
+      if (!isset($this->array[$position]) {
           throw new OutOfBoundsException("invalid seek position ($position)");
       }
+
+      $this->position = $position;
     }
 
     /* Methods required for Iterator interface */
     
-    public function __construct() {
-        $this->position = 0;
-    }
-
     public function rewind() {
         $this->position = 0;
     }