diff -r 2651972767c1 -r a3777909fd44 src/RelpipeChartMainWindow.cpp
--- a/src/RelpipeChartMainWindow.cpp	Tue Oct 20 23:48:51 2020 +0200
+++ b/src/RelpipeChartMainWindow.cpp	Fri Oct 23 12:10:45 2020 +0200
@@ -19,6 +19,7 @@
 #include <QPushButton>
 #include <QTableView>
 #include <QAction>
+#include <QHeaderView>
 
 #include "RelpipeChartMainWindow.h"