Error message not displayed properly

The error message displayed when Dropbox returns an error is not properly set. The sentence "Failed to upload the file. Dropbox returned the following error: !dropbox-error" is displayed, without Dropbox's message.

Line 300 in dropbox.module:

form_set_error('upload', t('Failed to upload the file. Dropbox returned the following error: !dropbox-error', array('!dropbox-error', $error)));

Should be:

form_set_error('upload', t('Failed to upload the file. Dropbox returned the following error: !dropbox-error', array('!dropbox-error' => $error)));