diff --git a/src/applications/files/config/PhabricatorFilesConfigOptions.php b/src/applications/files/config/PhabricatorFilesConfigOptions.php
--- a/src/applications/files/config/PhabricatorFilesConfigOptions.php
+++ b/src/applications/files/config/PhabricatorFilesConfigOptions.php
@@ -183,7 +183,7 @@
         'metamta.files.subject-prefix',
         'string',
         '[File]')
-        ->setDescription(pht('Subject prefix for paste email.')),
+        ->setDescription(pht('Subject prefix for Files email.')),
      $this->newOption('files.enable-imagemagick', 'bool', false)
        ->setBoolOptions(
          array(
diff --git a/src/applications/paste/config/PhabricatorPasteConfigOptions.php b/src/applications/paste/config/PhabricatorPasteConfigOptions.php
--- a/src/applications/paste/config/PhabricatorPasteConfigOptions.php
+++ b/src/applications/paste/config/PhabricatorPasteConfigOptions.php
@@ -25,7 +25,7 @@
         'metamta.paste.subject-prefix',
         'string',
         '[Paste]')
-        ->setDescription(pht('Subject prefix for paste email.'))
+        ->setDescription(pht('Subject prefix for Paste email.'))
     );
   }