diff --git a/resources/sql/patches/emailtableport.php b/resources/sql/patches/emailtableport.php
index 9c4a59ee90..14d000ee39 100644
--- a/resources/sql/patches/emailtableport.php
+++ b/resources/sql/patches/emailtableport.php
@@ -43,7 +43,7 @@ foreach ($emails as $phid => $email) {
     $etable->getTableName(),
     $phid,
     $email,
-    PhabricatorFile::readRandomCharacters(24));
+    Filessytem::readRandomCharacters(24));
 }
 
 echo "Done.\n";