--- a/toolkit/locales/en-US/chrome/mozapps/update/updates.dtd
+++ b/toolkit/locales/en-US/chrome/mozapps/update/updates.dtd
@@ -48,17 +48,17 @@
                                            the complete update package.">
 
 <!ENTITY  details.link                    "Details">
 <!ENTITY  pause.label                     "Pause">
 <!ENTITY  pause.accesskey                 "e">
 <!ENTITY  close.label                     "Close">
 <!ENTITY  close.accesskey                 "C">
 
-<!ENTITY  error.label                     "There were problems checking for, downloading or installing this 
+<!ENTITY  error.label                     "There were problems checking for, downloading, or installing this 
                                            update. &brandShortName; could not be updated because:">
                                            
 <!ENTITY  errorManual.label               "You can update &brandShortName; manually by visiting this link
                                            and downloading the latest version:">
                                            
 <!ENTITY  errorpatching.title             "Update Failed">
 <!ENTITY  errorpatching.intro             "The partial Update could not be applied. 
                                            &brandShortName; will try again by downloading a complete Update.">