Error page puts incorrect text in the page title of the browser

When the error page is displayed, the page title in the browser includes the error message text. This produces an incorrect page title such as:

Error: Message Body is required[br]Error: Subject is required[br] | MySite

Instead it should read:

feedback | MySite

Where "feedback" is the user-defined name of the module (it is "feedback" by default although I changed mine to "contact us").