-define('PROTOCOL_UNKNOWN', 0);
-define('PROTOCOL_DFRN', 1);
-define('PROTOCOL_DIASPORA', 2);
-define('PROTOCOL_OSTATUS_SALMON', 3);
-define('PROTOCOL_OSTATUS_FEED', 4); // Deprecated
-define('PROTOCOL_GS_CONVERSATION', 5); // Deprecated
-define('PROTOCOL_SPLITTED_CONV', 6);
+define('PROTOCOL_UNKNOWN' , Conversation::PROTOCOL_UNKNOWN);
+define('PROTOCOL_DFRN' , Conversation::PROTOCOL_DFRN);
+define('PROTOCOL_DIASPORA' , Conversation::PROTOCOL_DIASPORA);
+define('PROTOCOL_OSTATUS_SALMON' , Conversation::PROTOCOL_OSTATUS_SALMON);
+define('PROTOCOL_OSTATUS_FEED' , Conversation::PROTOCOL_OSTATUS_FEED); // Deprecated
+define('PROTOCOL_GS_CONVERSATION', Conversation::PROTOCOL_GS_CONVERSATION); // Deprecated
+define('PROTOCOL_SPLITTED_CONV' , Conversation::PROTOCOL_SPLITTED_CONV);