diff --git a/mozilla/extensions/irc/locales/en-US/chrome/chatzilla.properties b/mozilla/extensions/irc/locales/en-US/chrome/chatzilla.properties
index ca86a463565..1cfb9f8360b 100644
--- a/mozilla/extensions/irc/locales/en-US/chrome/chatzilla.properties
+++ b/mozilla/extensions/irc/locales/en-US/chrome/chatzilla.properties
@@ -1257,7 +1257,7 @@ msg.connection.abort.offline = The connection to %S (%S) was aborted because you
 msg.connection.abort.unknown = The connection to %S (%S) was aborted with error %S.
 msg.connection.timeout = Connection to %S (%S) timed out. [[Help][Get more information about this error online][faq connection.timeout]]
 msg.unknown.host       = Unknown host ``%S'' connecting to %S (%S). [[Help][Get more information about this error online][faq connection.unknown.host]]
-msg.invalid.cert       = "%S has an invalid security certificate. If you trust this server, [[add an exception][Opens the dialog to add a security certifcate exception][%S]].
+msg.invalid.cert       = "%S has an invalid security certificate. If you trust this server, [[add an exception][Opens the dialog to add a security certificate exception][%S]].
 msg.connection.closed  = Connection to %S (%S) closed. [[Help][Get more information about this error online][faq connection.closed]]
 msg.connection.reset   = Connection to %S (%S) reset. [[Help][Get more information about this error online][faq connection.reset]]
 msg.connection.quit    = Disconnected from %S (%S). [[Reconnect][Reconnect to %S][%S]]