diff --git a/GUI/View/Plot2D/IntensityDataCanvas.cpp b/GUI/View/Plot2D/IntensityDataCanvas.cpp
index 07a317dc37e7e93a8889e1f677efab44c43a96fa..614480ef5b9963a80fc3fa8cf3ef732e8aa743f0 100644
--- a/GUI/View/Plot2D/IntensityDataCanvas.cpp
+++ b/GUI/View/Plot2D/IntensityDataCanvas.cpp
@@ -20,7 +20,7 @@
 #include "GUI/View/Plot2D/ColorMapCanvas.h"
 #include "GUI/View/PlotUtil/ColorMap.h"
 #include "GUI/View/PlotUtil/SavePlotAssistant.h"
-#include "qcustomplot.h"
+#include <qcustomplot.h>
 #include <QVBoxLayout>
 
 namespace {
diff --git a/GUI/View/PlotUtil/ColorMap.cpp b/GUI/View/PlotUtil/ColorMap.cpp
index 9c1d0904bd9e1465c792c61fabd817d4b256de35..a73d6f6223a5e5b4eb1a03f6ad77a55a078a6c10 100644
--- a/GUI/View/PlotUtil/ColorMap.cpp
+++ b/GUI/View/PlotUtil/ColorMap.cpp
@@ -20,7 +20,7 @@
 #include "GUI/View/PlotUtil/PlotEventInfo.h"
 #include "GUI/View/PlotUtil/RangeUtils.h"
 #include "GUI/View/Tool/UpdateTimer.h"
-#include "qcustomplot.h"
+#include <qcustomplot.h>
 
 namespace {
 
diff --git a/GUI/View/PlotUtil/SavePlotAssistant.cpp b/GUI/View/PlotUtil/SavePlotAssistant.cpp
index 5df2bbfb1662731de540a61e3fc9168fb99f5c47..30feabf9aa625ef5f43c187c0264019a20a08efa 100644
--- a/GUI/View/PlotUtil/SavePlotAssistant.cpp
+++ b/GUI/View/PlotUtil/SavePlotAssistant.cpp
@@ -17,7 +17,7 @@
 #include "Device/IO/IOFactory.h"
 #include "GUI/Application/ApplicationSettings.h"
 #include "GUI/View/PlotUtil/ColorMap.h"
-#include "qcustomplot.h"
+#include <qcustomplot.h>
 #include <QFileDialog>
 #include <QMessageBox>
 #include <QVector>