diff --git a/core/lib/Drupal/Component/Gettext/PoHeader.php b/core/lib/Drupal/Component/Gettext/PoHeader.php
index 1d841cc124..a45382ad14 100644
--- a/core/lib/Drupal/Component/Gettext/PoHeader.php
+++ b/core/lib/Drupal/Component/Gettext/PoHeader.php
@@ -255,7 +255,7 @@ private function parseHeader($header) {
     foreach ($lines as $line) {
       if ($line) {
         list($tag, $contents) = explode(":", $line, 2);
-        $header_parsed[trim($tag)] = trim($contents);
+        $header_parsed[trim(ltrim($tag,'"'))] = trim(rtrim($contents,'"\n'));
       }
     }
     return $header_parsed;