diff --git a/browser/branding/official/locales/en-US/brand.dtd b/browser/branding/official/locales/en-US/brand.dtd
index 7bfa07f718..1d2ac791e3 100644
--- a/browser/branding/official/locales/en-US/brand.dtd
+++ b/browser/branding/official/locales/en-US/brand.dtd
@@ -6,4 +6,5 @@
 <!ENTITY  brandShortName        "Basilisk">
 <!ENTITY  brandFullName         "Basilisk">
 <!ENTITY  vendorShortName       "Moonchild">
+<!ENTITY  vendorFullName        "Moonchild Productions">
 <!ENTITY  trademarkInfo.part1   "Basilisk, Basilisk Browser and the Basilisk logos are trademarks of Moonchild Productions.">