diff --git a/qt/history_widget.cpp b/qt/history_widget.cpp
index 33c9839..463b98f 100644
--- a/qt/history_widget.cpp
+++ b/qt/history_widget.cpp
@@ -23,6 +23,7 @@
 #include <cmath>
 #include <QtGui/QTreeView>
 #include <QtGui/QTabWidget>
+#include <QtGui/QHeaderView>
 #include <QtGui/QStandardItemModel>
 #include <QtGui/QMenu>
 #include <QtCore/QSettings>
diff --git a/qt/training_widget.cpp b/qt/training_widget.cpp
index a5261bc..5f1bc67 100644
--- a/qt/training_widget.cpp
+++ b/qt/training_widget.cpp
@@ -20,6 +20,7 @@
 
 #include <QtGui/QStandardItemModel>
 #include <QtGui/QMenu>
+#include <QtGui/QHeaderView>
 
 #include "training_widget.h"
 #include "qtcommon.h"