diff --git a/libs/graphic/graphic.cpp b/libs/graphic/graphic.cpp
index 041de28..ab7ec7a 100644
--- a/libs/graphic/graphic.cpp
+++ b/libs/graphic/graphic.cpp
@@ -3,6 +3,7 @@
 #include "uglwidget.h"
 #include "ui_graphic.h"
 #include "ui_graphic_conf.h"
+#include <float.h>
 #include <QMetaObject>
 #include <QMessageBox>
 #include <QTapAndHoldGesture>