diff --git a/library/src/configuration.cpp b/library/src/configuration.cpp
index c6ef72d..7138855 100644
--- a/library/src/configuration.cpp
+++ b/library/src/configuration.cpp
@@ -1,4 +1,9 @@
 #include "configuration.h"
+#include "tariff_timebase.h"
+#include "time_range_header.h"
+
+#include <QString>
+#include <QDebug>
 
 /// <inheritdoc/>
 MemberType Configuration::IdentifyJsonMember(const char* member_name)