Cannot accept changes when a username contains a quotation mark

I just came across an error. One of my users has double quotes in his name (") and if I try to moderate his changes to an article, I can't apply them. The skript tells me that a username should not contain (;).
Now... Is there a workaround or do I have to ask the user to rename the account?

Thank you very much for any useful suggestions!

Oh and I'm running 3.0.17

In vault/tab/inlinemod.php, find:

Code:

---

                                $rolldata->set($field, $value);

---

Replace with:

Code:

---

                                if ($field == 'username')
                                {
                                        $rolldata->do_set($field, $value);
                                }
                                else
                                {
                                        $rolldata->set($field, $value);
                                }

---

Thanks that worked like a charm! :)