[reSIProcate] Qop param not double quoted

[julien]

Hello,
I found out after using Helper::addAuthorization(...) that the returned 
Authorization header as some missing double quote,
for example qop=auth instead of qop="auth"

in RFC 2617 we have :

qop-options       = "qop" "=" <"> 1#qop-value <">
qop-value         = "auth" | "auth-int" | token

so I am thinking whatever the qop-value, it MUST be quoted...
Could someone tell me if I am reading this correctly? ^^

Thank you for your help

-- 
Julien