diff --git a/backends/twitter/Requests/FetchFriends.h b/backends/twitter/Requests/FetchFriends.h
index 4577b7961e8e1837d9c8c9a5e059789996d05fe4..e0bddc12d60eb10a30f2a4936ec08252ccf8fefa 100644
--- a/backends/twitter/Requests/FetchFriends.h
+++ b/backends/twitter/Requests/FetchFriends.h
@@ -21,11 +21,11 @@ class FetchFriends : public Thread
 	std::vector<User> friends;
 	std::vector<std::string> friendAvatars;
 	bool success;
-	boost::function< void (std::string, std::vector<User> &, std::vector<std::string> &, Error) > callBack;
+	boost::function< void (std::string &, std::vector<User> &, std::vector<std::string> &, Error &) > callBack;
 
 	public:
 	FetchFriends(twitCurl *obj, const std::string &_user, 
-			     boost::function< void (std::string, std::vector<User> &, std::vector<std::string> &, Error) >  cb) {
+			     boost::function< void (std::string &, std::vector<User> &, std::vector<std::string> &, Error &) >  cb) {
 		twitObj = obj->clone();
 		user = _user;
 		callBack = cb;