diff --git a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
index abbe962954..cd892a9687 100644
--- a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
@@ -160,7 +160,8 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
     /**
      * Dumps the current line.
      *
-     * @param int $depth The recursive depth in the dumped structure for the line being dumped
+     * @param int $depth The recursive depth in the dumped structure for the line being dumped,
+     *                   or -1 to signal the end-of-dump to the line dumper callable
      */
     protected function dumpLine($depth)
     {