diff --git a/src/Symfony/Component/Console/Output/Output.php b/src/Symfony/Component/Console/Output/Output.php
index e791ce6b26..69611b7349 100644
--- a/src/Symfony/Component/Console/Output/Output.php
+++ b/src/Symfony/Component/Console/Output/Output.php
@@ -29,14 +29,6 @@ use Symfony\Component\Console\Formatter\OutputFormatter;
  */
 abstract class Output implements OutputInterface
 {
-    const VERBOSITY_QUIET   = 0;
-    const VERBOSITY_NORMAL  = 1;
-    const VERBOSITY_VERBOSE = 2;
-
-    const OUTPUT_NORMAL = 0;
-    const OUTPUT_RAW = 1;
-    const OUTPUT_PLAIN = 2;
-
     private $verbosity;
     private $formatter;