diff --git a/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
index 5fd2378499..3b1bda5084 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
@@ -72,6 +72,10 @@ class TimeDataCollector extends DataCollector
      */
     public function getDuration()
     {
+        if (!isset($this->data['events']['__section__'])) {
+            return 0;
+        }
+
         $lastEvent = $this->data['events']['__section__'];
 
         return $lastEvent->getOrigin() + $lastEvent->getDuration() - $this->getStartTime();
@@ -86,6 +90,10 @@ class TimeDataCollector extends DataCollector
      */
     public function getInitTime()
     {
+        if (!isset($this->data['events']['__section__'])) {
+            return 0;
+        }
+
         return $this->data['events']['__section__']->getOrigin() - $this->getStartTime();
     }