--- a/src/basics.h	Wed Apr 04 11:24:37 2018 +0300
+++ b/src/basics.h	Wed Apr 04 11:41:26 2018 +0300
@@ -19,6 +19,7 @@
 #pragma once
 #include <cstdio>
 #include <cstdlib>
+#include <QDate>
 #include <QFile>
 #include <QLineF>
 #include <QMatrix4x4>