diff --git a/ext/spl/internal/limititerator.inc b/ext/spl/internal/limititerator.inc
index 930ba535fad..b3e4088f811 100755
--- a/ext/spl/internal/limititerator.inc
+++ b/ext/spl/internal/limititerator.inc
@@ -32,7 +32,7 @@ class LimitIterator implements OuterIterator
 	 *
 	 * @param it     Iterator to limit
 	 * @param offset Offset to first element
-	 * @param count  Maximum number of elements to show or NULL for all
+	 * @param count  Maximum number of elements to show or -1 for all
 	 */
 	function __construct(Iterator $it, $offset = 0, $count = -1)
 	{