diff --git a/toolkit/components/console/jsconsole-clhandler.js b/toolkit/components/console/jsconsole-clhandler.js
index 7e5d0ea51e..1fff888900 100644
--- a/toolkit/components/console/jsconsole-clhandler.js
+++ b/toolkit/components/console/jsconsole-clhandler.js
@@ -31,7 +31,7 @@ jsConsoleHandler.prototype = {
       cmdLine.preventDefault = true;
   },
 
-  helpInfo : "  -jsconsole                          Open the Error console.\n",
+  helpInfo : "  --jsconsole                                  Open the Error console.\n",
 
   classID: Components.ID("{2cd0c310-e127-44d0-88fc-4435c9ab4d4b}"),
   QueryInterface: XPCOMUtils.generateQI([Ci.nsICommandLineHandler]),