diff --git a/locales/en-US.yml b/locales/en-US.yml
index 26c51e808..a18c7fdb6 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -850,6 +850,8 @@ recentNDays: "Last {n} days"
 isSystemAccount: "An account created and automatically operated by the system."
 typeToConfirm: "Please enter {x} to confirm"
 deleteAccount: "Delete account"
+numberOfPageCache: "Number of cached pages"
+numberOfPageCacheDescription: "Increasing this number will improve convenience for users but cause more server load as well as more memory to be used."
 _emailUnavailable:
   used: "This email address is already being used"
   format: "The format of this email address is invalid"