diff --git a/toolkit/locales/en-US/chrome/global/about.dtd b/toolkit/locales/en-US/chrome/global/about.dtd
index 7ccccd8f25..85c1a6d252 100644
--- a/toolkit/locales/en-US/chrome/global/about.dtd
+++ b/toolkit/locales/en-US/chrome/global/about.dtd
@@ -27,5 +27,5 @@
 <!-- LOCALIZATION NOTE (about.buildconfig.afterTheLink): note that there is no space between the linked about.buildconfig.linkTitle phrase and this phrase, so if your locale needs a space between words, add it at the start of this entity. -->
 <!ENTITY about.buildconfig.afterTheLink  " used for this version.">
 
-<!ENTITY about.buildIdentifier        "Build identifier: ">
+<!ENTITY about.buildIdentifier        "Build identifier:">
 <!ENTITY about.userAgent              "User-agent:">