--- a/browser/chrome/browser/browser.dtd
+++ b/browser/chrome/browser/browser.dtd
@@ -596,16 +596,17 @@ you can use these alternative items. Oth
 <!ENTITY fullScreenButton.tooltip       "Afficher la fenêtre en plein écran">
 
 <!ENTITY zoomOutButton.tooltip          "Zoom arrière">
 <!ENTITY zoomInButton.tooltip           "Zoom avant">
 <!ENTITY zoomControls.label             "Niveau de zoom">
 
 <!ENTITY quitApplicationCmdWin.label       "Quitter">
 <!ENTITY quitApplicationCmdWin.accesskey   "Q">
+<!ENTITY quitApplicationCmdWin.tooltip     "Quitter &brandShortName;">
 <!ENTITY goBackCmd.commandKey "[">
 <!ENTITY goForwardCmd.commandKey "]">
 <!ENTITY quitApplicationCmd.label       "Quitter">
 <!ENTITY quitApplicationCmd.accesskey   "Q">
 
 <!ENTITY quitApplicationCmdMac.label    "Quitter &brandShortName;">
 <!-- LOCALIZATION NOTE(quitApplicationCmdUnix.key): This keyboard shortcut is used by both Linux and OSX builds. -->
 <!ENTITY quitApplicationCmdUnix.key     "Q">