diff --git a/src/Mod/Image/Gui/ImageView.cpp b/src/Mod/Image/Gui/ImageView.cpp
index 066e3372a4..5d084733aa 100644
--- a/src/Mod/Image/Gui/ImageView.cpp
+++ b/src/Mod/Image/Gui/ImageView.cpp
@@ -17,6 +17,7 @@
 
 #include "PreCompiled.h"
 #ifndef _PreComp_
+# include <cmath>
 # include <QAction>
 # include <QApplication>
 # include <QMenu>