diff --git a/lib/task/sfTask.class.php b/lib/task/sfTask.class.php
index e5d728490..79de3dde5 100644
--- a/lib/task/sfTask.class.php
+++ b/lib/task/sfTask.class.php
@@ -304,7 +304,10 @@ public function getBriefDescription()
    */
   public function getDetailedDescription()
   {
-    return preg_replace('/\[(.+?)\|(\w+)\]/se', '$this->formatter->format("$1", "$2")', $this->detailedDescription);
+    $formatter = $this->getFormatter();
+    return preg_replace_callback('/\[(.+?)\|(\w+)\]/s', function ($match) use ($formatter) {
+      return $formatter->format($match['1'], $match['2']);
+    }, $this->detailedDescription);
   }
 
   /**
diff --git a/test/unit/task/sfTaskTest.php b/test/unit/task/sfTaskTest.php
index 32edcead3..faa3115ce 100644
--- a/test/unit/task/sfTaskTest.php
+++ b/test/unit/task/sfTaskTest.php
@@ -9,7 +9,7 @@
  */
 require_once dirname(__FILE__).'/../../bootstrap/unit.php';
 
-$t = new lime_test(15);
+$t = new lime_test(16);
 
 abstract class BaseTestTask extends sfTask
 {
@@ -114,3 +114,19 @@ protected function configure()
 
 $task->run(array(), array('array' => 'one'));
 $t->is_deeply($task->lastOptions, array('none' => false, 'required' => null, 'optional' => null, 'array' => array('one')), '->run() accepts an associative array of options with a scalar array option value');
+
+// ->getDetailedDescription()
+$t->diag('->getDetailedDescription()');
+
+class DetailedDescriptionTestTask extends BaseTestTask
+{
+  protected function configure()
+  {
+    $this->detailedDescription = <<<EOF
+The [detailedDescription|INFO] formats special string like [...|COMMENT] or [--xml|COMMENT]
+EOF;
+  }
+}
+
+$task = new DetailedDescriptionTestTask();
+$t->is($task->getDetailedDescription(), "The detailedDescription formats special string like ... or --xml", "->getDetailedDescription() formats special string");