diff --git a/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php b/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
index b1dc3863a18cc..d4e46e0805075 100644
--- a/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
+++ b/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
@@ -77,7 +77,8 @@ protected function extractTemplate($template, MessageCatalogue $catalogue)
         $this->twig->parse($this->twig->tokenize($template));
 
         foreach ($visitor->getMessages() as $message) {
-            $catalogue->set($message[0], $this->prefix.$message[0], $message[1] ? $message[1] : $this->defaultDomain);
+            $placeholder = trim($message[0]);
+            $catalogue->set($placeholder, $this->prefix.$placeholder, $message[1] ? $message[1] : $this->defaultDomain);
         }
 
         $visitor->disable();