diff --git a/src/GUI/coordinatesitem.cpp b/src/GUI/coordinatesitem.cpp
index b85ba01d..1e1688ad 100644
--- a/src/GUI/coordinatesitem.cpp
+++ b/src/GUI/coordinatesitem.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include <QFontMetrics>
 #include <QPainter>
 #include "font.h"
diff --git a/src/GUI/legenditem.cpp b/src/GUI/legenditem.cpp
index 9bf0ecc5..e69b5a33 100644
--- a/src/GUI/legenditem.cpp
+++ b/src/GUI/legenditem.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include <QPainter>
 #include "font.h"
 #include "legenditem.h"