diff --git a/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php b/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
index d99b493ac6..35dfc0e344 100644
--- a/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
+++ b/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
@@ -36,12 +36,9 @@ class TranslationDataCollector extends DataCollector implements LateDataCollecto
     {
         $messages = $this->sanitizeCollectedMessages($this->translator->getCollectedMessages());
 
-        $this->data = $this->computeCount($messages);
+        $this->data += $this->computeCount($messages);
         $this->data['messages'] = $messages;
 
-        $this->data['locale'] = $this->translator->getLocale();
-        $this->data['fallback_locales'] = $this->translator->getFallbackLocales();
-
         $this->data = $this->cloneVar($this->data);
     }
 
@@ -50,6 +47,8 @@ class TranslationDataCollector extends DataCollector implements LateDataCollecto
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
+        $this->data['locale'] = $this->translator->getLocale();
+        $this->data['fallback_locales'] = $this->translator->getFallbackLocales();
     }
 
     /**