diff --git a/src/configuration.cc b/src/configuration.cc
index 74c43dd5f2829edc0ee971e693b3b03cca88d79f..868b79d4d2aeaf35f341721978aab59b795c69dc 100644
--- a/src/configuration.cc
+++ b/src/configuration.cc
@@ -2,6 +2,8 @@
 
 #include <cmath>
 
+// TODO check, remove unused parameters
+// TODO check, variable types
 Configuration::Configuration(QObject *parent)
     : QObject(parent),
       settings_(QSettings::IniFormat, QSettings::UserScope, "matrix-group",