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extensions/ter_fe2/Classes/Service/ExtkeyTransferMailService.php

@@ -42,7 +42,7 @@ class ExtkeyTransferMailService
         $mail = GeneralUtility::makeInstance(FluidEmail::class);
         $mail
             ->to(new Address($user->getEmail(), $user->getName()))
-            ->subject('Extension Key ' . $extkey . ' is transferred to you!')
+            ->subject('Extension Key "' . $extkey . '" was transferred to you!')
             ->format(FluidEmail::FORMAT_PLAIN)
             ->setTemplate('ExtensionKeyTransferMail')
             ->assignMultiple(